Raising sheet metal into surfaces and hollow forms — Tools and materials

Raising is a controlled sheet-metal forming process in which repeated hammer blows, delivered over a suitable stake or other solid support, progressively turn a flat or partly formed sheet into a three-dimensional surface or hollow form. The craft is central to Silversmithing, Coppersmithing, Blacksmithing, architectural metalwork and artistic metalwork. In professional practice, successful raising depends as much on tool condition, material identification, work support and process control as on hammering skill.

This module concentrates on tools and materials. It is designed for vocational learners who are beginning to select, inspect and use hand tools for raised metalwork under competent supervision. It also introduces the decisions that determine whether a piece can be raised safely and to specification.

The image above shows a historical copper-alloy sheet-metal bowl. It provides a useful reminder that hollow forms made from sheet have a long craft history, while modern vocational practice adds documented material selection, controlled tooling, inspection and workplace safety systems.

Workshop boundary: This course does not authorise unsupervised hazardous work. Do not use powered shears, grinders, polishing machinery, torches, furnaces, hot metal, pickling chemicals or other hazardous processes unless a competent instructor or workplace supervisor has authorised the task and the local risk assessment, guarding, ventilation, training and emergency arrangements are in force.

Authority rule: Official legal requirements, current standards, manufacturer instructions, risk assessments, safe systems of work and workplace or training-provider instructions take precedence over this learning resource.

Course Metadata

Item	Course information
Parent topic	Raising sheet metal into surfaces and hollow forms
Module	Tools and materials
Target learners	Vocational learners in blacksmithing, silversmithing, coppersmithing and artistic metalwork
Target language	English
Selected jurisdiction	United Kingdom, with legal scope stated precisely below
Vocational reference	England: Blacksmith Level 3 apprenticeship standard ST0378, version 1.1
Suggested delivery	Tutor-led theory, supervised workshop demonstration, guided practice, inspection and reflection
Prior knowledge	Basic workshop conduct, hand-tool awareness, measurement and material identification
Open licence	Original course text and original schematic are intended for reuse under CC BY-SA 4.0; embedded third-party media retain their own licences or publication terms
Review status	Ready for review by a competent vocational metalwork educator and workplace safety specialist before local delivery

Jurisdiction and Current Authority Check

Selected jurisdiction: United Kingdom. Because workplace-safety law and vocational systems are not identical throughout the UK, this module does not blend them.

Great Britain — workplace safety: References to the Health and Safety Executive, PUWER, COSHH, PPE and the Control of Noise at Work Regulations below apply to Great Britain, meaning England, Scotland and Wales. Northern Ireland has separate enforcing arrangements and legislation. Do not assume that a Great Britain legal reference is automatically the correct legal reference in Northern Ireland.

England — apprenticeship reference: The vocational pathway cited here is the Skills England Blacksmith Level 3 apprenticeship standard ST0378 version 1.1. Skills England lists it as approved for delivery. Its occupational standard includes health and safety, tools, materials and equipment, bench work and forging-related knowledge and skills. This is an England training reference, not an automatic UK-wide qualification equivalence.

United Kingdom — standards context: BSI is the UK National Standards Body. A relevant current eye-and-face protection standard is BS EN ISO 16321-1:2022+A1:2025, Eye and face protection for occupational use — General requirements. Standards can support good practice and compliance, but a standard is not automatically a law and does not replace the employer's legal duties or task-specific risk assessment.

Authority check date: 1 September 2026. Before teaching or assessment, verify that these sources are still current:

No automatic cross-country equivalence is claimed. If this module is used in Ireland, the United States, Canada, Australia, New Zealand, South Africa or another jurisdiction, a competent reviewer must replace the legal, qualification and standards references with the correct local authorities before delivery.

Learning Outcomes

By the end of this module, you should be able to:

Identify raising tools: Distinguish raising hammers, planishing hammers, mallets, stakes, stake holders and common layout and cutting tools by function rather than appearance alone.
Inspect tools: Recognise defects that can damage the workpiece or create an unsafe condition and know when to remove equipment from use.
Select sheet metal: Compare copper, low-carbon steel, brass, aluminium, silver and stainless steel in relation to ductility, work hardening, surface condition, thickness and intended process.
Select work support: Match a stake radius and support arrangement to the intended curvature and stage of raising.
Explain a raising sequence: Describe how overlapping courses, supported blows, rotation and intermediate inspection create a controlled hollow form.
Apply risk controls: Use the hierarchy of control, workshop instructions and task-specific PPE requirements rather than treating PPE as the only control.
Assess quality: Judge profile, symmetry, rim condition, surface marks and evidence of cracking, folding or uncontrolled thinning.
Reduce waste: Plan blanks, segregate scrap, maintain tools and minimise unnecessary grinding, heating and material consumption.

Core Concept: Raising, Sinking and Planishing

Raising, sinking and planishing are related but different operations.

Raising generally forms a vessel by compressing and redistributing metal through controlled hammering over a stake or support. The work is commonly progressed in organised courses around the form. A raised vessel becomes deeper while the metal is repeatedly worked and the curvature is refined.

Sinking creates depth by stretching sheet into a hollow depression or former. In practice, makers may combine sinking and raising, but the mechanisms and tool support are different. For training, use the process name that matches the actual operation.

Planishing is a later refining operation using controlled light blows over a smooth support to improve surface regularity and remove smaller hammer marks. Planishing is not a substitute for correcting major shape errors during raising.

The Victoria and Albert Museum's metalworking techniques guide describes raising as forming flat sheet into three-dimensional form by hammering over a solid support such as an anvil or stake.

In this Victoria and Albert Museum video, silversmith Ndidi Ekubia demonstrates raising, discusses traditional tools and shows how hammering and annealing contribute to the development of a vessel. Treat the heating sequence as an expert demonstration, not as permission to reproduce it without supervised training and the local controls for hot work.

A Simple Raising Geometry Diagram

The following original schematic is a learning aid, not a substitute for an instructor demonstration and not to scale.

                 raising hammer
                      ↓
                 controlled blow
                      ↓
sheet surface  _______/ \_______
                     ↑
              supported zone
                     ●
               raising stake

        Rotate the work progressively →
        Keep the active zone supported.

A useful practical principle is support the metal where you strike it. If you strike too far from the intended support zone, the sheet can buckle, crease or take uncontrolled local dents. The exact hammer angle and contact point vary with the tool geometry, material, thickness and stage of the form, so learn them through supervised demonstration rather than by copying a fixed angle from a diagram.

Tools for Raising

This Wikimedia Commons image shows stakes and hammers used by British silversmith Robert Stone. Compare the smooth working faces, different radii and specialised stake shapes. A professional tool choice is made by the required contact geometry and surface condition, not by the tool name alone.

Raising Hammers

A raising hammer normally has a narrow, rounded or specially profiled working face suited to moving metal in controlled tracks. Different makers use cross-peen, straight-peen or purpose-made raising profiles. The key questions are:

Is the face radius appropriate for the intended contact?
Is the face polished or dressed to the finish required?
Is the head secure on the handle?
Is the handle sound, clean and comfortable?
Is the mass suitable for the sheet thickness and the learner's controlled swing?
Does the hammer allow repeated blows without forcing excessive grip tension?

A heavier hammer is not automatically more effective. Raising depends on consistent energy, accurate placement and support. Excessive force can create deep marks, local stretching, edge distortion, fatigue and loss of control.

Inspection points: Look for a loose head, split or damaged handle, badly mushroomed edges, chips, corrosion, embedded abrasive particles, deep scratches or an oily grip. A damaged hammer should be isolated and reported according to workplace procedure rather than improvised into service.

Planishing Hammers

A planishing hammer has a smooth face intended for finishing and refining a form over a matching smooth stake or anvil surface. Planishing is normally lighter than primary raising. The hammer and stake surfaces must be especially clean because scratches, pits and grit can be transferred repeatedly into the work.

A common learner error is to planish too early. If the basic profile is wrong, polishing the hammer marks does not correct the geometry. Correct major form and rim errors first.

Mallets and Non-Marring Tools

Wooden, nylon, rawhide or other non-marring mallets can be used for particular forming, seating or correction operations. They may move or settle the sheet while producing less surface marking than a steel hammer. Their usefulness depends on material, thickness and desired form.

Inspect a mallet for loose heads, split handles, damaged faces and embedded swarf. A soft-faced tool containing metal particles can mark a polished sheet as effectively as a damaged steel face.

Stakes

A stake is a rigid forming support with a defined working surface. Raising stakes can be mushroom-shaped, domed, T-shaped, beaked or purpose-made. A stake is selected for the radius and access needed at the current stage of the form.

Important characteristics include:

Working-face radius
Surface finish
Edge transition
Mass and stiffness
Shank or mounting geometry
Access to the inside or outside of the work
Compatibility with the stake holder or bench system

A stake that is too sharply crowned can create a narrow contact zone and local marks. A stake that is too flat may not support the intended curvature. Experienced makers often change stakes as the vessel becomes deeper.

Stake Holders, Benches and Support

The stake holder, vice, bench plate or dedicated socket must restrain the stake against movement and vibration. The assembly should place the work at a height that allows a stable posture without raised shoulders or excessive bending.

Do not assume that a heavy stake is stable simply because of its mass. Check the mounting before work begins. An unstable stake can shift under impact, damage the work and create hand or foot hazards.

Anvils, Blocks and Forming Supports

Depending on the operation, a smooth anvil face, swage block, wooden block, sandbag or specialised former may be used before, during or after raising. These are not interchangeable. A hollow depression supports sinking; a convex stake commonly supports raising; a smooth matching surface supports planishing.

In artistic metalwork, custom stakes and formers are often made for a repeated profile. Any fabricated tool must be assessed for material, weld integrity, mounting and surface finish before use.

Layout and Measuring Tools

Accurate raising begins before the first hammer blow. Typical tools include:

Tool	Purpose	Good practice
Steel rule	General linear measurement	Use a clean, legible rule and read square to the scale.
Dividers	Scribing circles and checking repeated distances	Keep points controlled; protect finished surfaces when required.
Scriber	Fine layout lines	Use only where the specification permits a permanent scratch.
Flexible profile template	Comparing curvature during forming	Mark datum points so comparisons are repeatable.
Vernier or digital caliper	Checking dimensions and local thickness where appropriate	Keep measuring faces clean and avoid forcing the tool.
Square	Checking datum relationships and setup	Use a known reference surface.
Marker	Visual course lines or inspection marks	Confirm compatibility with the material and later finishing processes.

For high-finish work, layout marks should not become permanent defects. Choose scribing or removable marking to suit the drawing and finish requirement.

Cutting and Edge-Preparation Tools

Hand snips can cut suitable sheet within their rated capacity. Powered guillotines, bench shears and nibblers may be used in professional workshops, but their guarding, setup and operation require task-specific training.

After cutting, sheet edges may carry burrs or razor-like projections. Edge preparation can involve files, scrapers, deburring tools or approved abrasive processes. Powered grinding introduces additional risks including sparks, dust, entanglement, noise and wheel hazards. It is not a casual substitute for correct shearing and filing.

Safe learning rule: A tutor should provide pre-cut, deburred practice blanks where cutting machinery is outside the learner's authorised scope.

Tool Care and Storage

Good tool care protects both safety and surface quality:

Store polished hammers and stakes so their faces do not strike each other.
Remove moisture and corrosion in accordance with workshop procedure.
Keep abrasive dust away from polished forming tools.
Dress or polish working faces only by an approved method and under competent supervision.
Keep wooden handles free from oil and inspect them for splits.
Label specialised stakes and return them to their designated locations.
Record defects instead of leaving questionable tools for the next learner.
Do not modify a proprietary tool outside manufacturer guidance or workplace authorisation.

Tool maintenance is part of craftsmanship. A polished stake with one deep scratch can reproduce that defect around an entire vessel.

Materials for Raised Hollow Forms

The image above provides a visual reference for copper stock. Copper is widely used for teaching and artistic hollowware because it is ductile and its response to work hardening is easy to observe. The exact alloy, temper, thickness and surface condition still matter.

Low-carbon steel sheet can also be raised, but it generally requires greater forming force than copper and may be worked cold or hot depending on the design, thickness and process. Hot raising is an advanced supervised operation and is outside the practical scope of this introductory module.

Material Properties That Matter

Ductility is the ability of a material to undergo plastic deformation without fracture. Good ductility is important for raising because the sheet must change shape repeatedly.

Malleability describes the ability to deform under compressive loading. In craft discussion it is often used broadly for metals that respond well to hammering.

Work hardening is the increase in strength and hardness that occurs in many metals during plastic deformation. As raising progresses, the sheet can become less willing to move and more prone to cracking if the process continues beyond an appropriate condition.

Annealing is a controlled heat treatment used to alter material condition and restore working properties in many metals. The correct temperature, heating method, cooling route and surface treatment are alloy-specific. This course does not give a universal annealing recipe. Heating must be taught as a separate supervised process with the correct fire, fume, fuel-gas, hot-metal and chemical controls.

Thickness affects stiffness, required forming force, allowable detail, weight and potential thinning. The drawing or job specification should state the required gauge or thickness.

Temper or condition describes the material's metallurgical state. Two sheets of the same nominal alloy can behave differently if supplied in different tempers or conditions.

Surface condition matters because mill scale, scratches, coatings, corrosion, adhesive residues and embedded particles can affect forming, finishing or exposure controls.

Comparison of Common Sheet Materials

Material	Typical raising behaviour	Tool and process implications	Learning notes
Copper	Highly ductile in suitable condition; progressively work hardens	Responds well to controlled hand raising; smooth tools reduce marking	Common teaching material for hollowware; use known clean stock
Low-carbon steel	Tougher than copper and generally requires higher forming force	Greater tool loading and often more noise; hot working may be chosen for some forms	Cold practice should use thickness and grade approved by the instructor
Brass	Many brass alloys form well but work harden and may crack if overworked	Alloy and condition must be known; avoid treating all brasses as identical	Use supplier data and workshop procedure for any heat treatment
Aluminium	Some alloys are very formable; others have limited formability in a given temper	Soft surfaces mark easily; tooling and cleanliness matter	Identify alloy and temper instead of assuming all aluminium is soft
Silver	Traditional hollowware material with good formability in suitable condition	Requires high-quality tool surfaces and careful material accounting	Common in silversmithing; cost makes process planning especially important
Stainless steel	Generally stronger and can work harden rapidly	Higher forming forces and tool loads; finish is sensitive to contamination and marking	Often unsuitable for a first hand-raising exercise unless the training plan specifically uses it

Material names alone are not sufficient for professional selection. Record the alloy or grade, thickness, temper or condition, surface finish and supplier identification where these are specified.

Known Stock Versus Unknown Scrap

Using reclaimed metal can support sustainability, but unknown scrap is not automatically safe or suitable. It may contain coatings, plating, solder, lead, residues, hidden laminates or an unsuitable alloy. Heating coated or contaminated metal can create hazardous fumes.

For supervised vocational practice:

Prefer traceable, clean sheet with a known grade or alloy.
Keep stock labels, certificates or supplier records where required.
Do not heat painted, plated, galvanised or unidentified sheet unless a competent person has assessed the material and authorised a controlled process.
Keep different alloys segregated for recycling.
Treat unusual residues, dusts and coatings under the applicable COSHH assessment in Great Britain.

Authentic Workshop Examples

Example: Copper Practice Bowl

A training workshop may use a clean, instructor-prepared copper disc for an introductory raised bowl. Learners mark concentric guide courses, select a suitable raising stake and hammer, make a controlled first course, inspect the developing profile and record how the material stiffens as work hardening develops.

The learning goal is not maximum speed. It is consistency: supported blows, regular rotation, even progression, clean surfaces and timely inspection.

Example: Silversmithed Hollowware

Professional silversmiths commonly raise bowls, beakers, vases and sculptural vessels from sheet. The Goldsmiths' Centre describes contemporary silversmithing training that includes hand-raising, hammering, forming and the use of hammers and stakes. Because precious-metal sheet is expensive, layout, weight control, clean tools and planned sequences are especially important.

Goldsmiths' Centre: Silversmithing Skills, September 2026

Example: Artistic Steel Vessel

A blacksmith or artistic metalworker may raise thicker low-carbon steel hot over stakes and anvils. This shares the geometric idea of raising but has a very different risk profile from cold copper practice: hot metal, scale, fuel, fire, radiant heat, higher impact energy and handling tools become central. It must therefore be taught as a separate authorised activity with specific controls.

Use this hot-raising video for observation and process comparison only. Learners should identify differences in tooling, heat management, workholding and PPE rather than imitate the process without supervised instruction.

Risk Control in the Great Britain Context

This section uses Great Britain HSE sources. It does not claim legal equivalence for Northern Ireland or other countries.

Under PUWER, work equipment should be suitable for its intended use, maintained in a safe condition and used only by people who have received adequate information, instruction and training. HSE also emphasises appropriate supervision, particularly where workers are inexperienced or young.

The first question is not “Which PPE should I wear?” The first question is “Can the hazard be removed or controlled at source?”

Hierarchy of Control

Apply controls in a sensible order:

Level	Raising-work example
Eliminate	Use pre-cut and deburred blanks so an unauthorised learner does not need powered cutting equipment.
Substitute	Use a less hazardous finishing method or a softer practice material where it still meets the learning outcome.
Engineering control	Use guards, secure stake holders, local exhaust ventilation where a dust or fume process requires it, acoustic treatment or separation.
Administrative control	Training, supervision, safe systems of work, exclusion zones, tool inspections, maintenance and planned work-rest patterns.
PPE	Eye, hearing, footwear and other protection selected from the task risk assessment and fitted correctly.

PPE is important, but HSE guidance treats it as one part of the control system rather than a substitute for eliminating or controlling hazards at source.

Main Hazards and Controls

Hazard	Why it matters	Typical control approach	Stop and report when
Flying chips, scale or particles	Impact can injure eyes or face	Maintain tools, remove damaged tools, use screens where required and wear task-specified eye or face protection	A hammer, stake or workpiece is chipping, spalling or damaged
Sharp sheet edges and burrs	Cuts can occur during handling and rotation	Deburr before forming, control hand position, use handling protection where the risk assessment specifies it	An edge is unexpectedly sharp, cracked or folded
Hammer impact	Fingers and hands can enter the strike zone	Stable support, controlled grip, correct work position, adequate lighting and supervised technique	The work slips, the stake moves or control is lost
Noise	Repeated metal-on-metal impact can produce damaging exposure	Assess noise, reduce impact noise at source where practicable, isolate noisy work, limit exposure and use suitable hearing protection when required	Required hearing controls are missing or communication becomes unsafe
Vibration and fatigue	Prolonged hammering can reduce control and contribute to musculoskeletal strain	Correct tool mass and handle, neutral posture, task rotation, rest breaks and sensible session length	Grip, accuracy or sensation deteriorates
Manual handling	Stakes, blocks and sheet can be heavy or awkward	Plan the lift, use assistance or handling aids and keep routes clear	The load cannot be handled with control
Unsecured work support	A moving stake or vice can cause impact and pinch hazards	Inspect and secure the holder before starting	Any movement, looseness or cracking is detected
Dust and fumes	Grinding, polishing, coatings, hot work or chemical cleaning can create hazardous exposure	Avoid unnecessary generation, use extraction and COSHH controls, identify materials and coatings	Material identity is unknown or extraction is unavailable
Heat and fire	Annealing and hot raising introduce burns, ignition and fuel-gas hazards	Separate authorised hot-work area, competent supervision and local fire controls	Hot-work controls or supervision are absent
Entanglement	Rotating machinery can catch clothing, hair, jewellery or unsuitable gloves	Guarding, clothing and hair controls, correct machinery training and task-specific PPE decisions	Guarding is missing or the operator is not authorised

Noise: A Particular Raising Hazard

HSE notes that work with sheet metal can be very noisy and gives an indicative figure of around 93 dB(A) for some sheet-metal work. Actual exposure depends on the operation, impact energy, material, room acoustics and duration, so a competent noise assessment is required rather than relying on a single published number.

For Great Britain, HSE gives daily or weekly exposure action values of 80 dB(A) and 85 dB(A), with corresponding peak values of 135 dB(C) and 137 dB(C), and exposure limit values of 87 dB(A) and 140 dB(C) taking account of hearing protection. Employers must use the current regulations and HSE guidance to determine the controls that apply.

Practical workshop measures can include quieter processes, damping or isolation, separation of hammering areas, acoustic treatment, exposure planning and suitable hearing protection. Learners must still be able to receive essential instructions and warnings.

Eye and Face Protection

The image shows safety glasses and earplugs as examples of PPE. It does not mean that these exact items are suitable for every raising task.

The risk assessment determines the required protection. HSE guidance identifies flying particles and metal-related hazards as reasons to select appropriate eye or face protection. BSI's current general occupational eye-and-face protection standard is BS EN ISO 16321-1:2022+A1:2025. The exact marking and performance required depend on the hazard and workplace specification.

Check that eye protection is compatible with hearing protection, prescription eyewear and other PPE. Fit and condition matter.

Young and Inexperienced Learners

HSE states that young people are likely to be new to the workplace and may need additional support to work safely. Training should be clear and sufficient, and supervision should reflect the learner's experience and the risk.

In a vocational workshop, a learner who can name a tool is not necessarily competent to use it independently. Authorisation should be based on observed safe performance, understanding of limits and the local training system.

Step-by-Step Demonstration: First Controlled Raising Course

Scope: This is a tutor-led demonstration using a clean, deburred, instructor-approved soft copper practice blank, hand tools and a securely mounted raising stake. It intentionally excludes powered cutting, grinding, annealing, pickling and hot work.

Precondition: The instructor has completed the local risk assessment, checked the work area, selected the PPE, confirmed the learner's authorisation level and inspected the tools.

Confirm the job information. Identify the practice blank, thickness, target profile, datum marks and acceptance criteria. Do not proceed with unidentified stock.
Inspect the blank. Check for burrs, cracks, sharp projections, coating, contamination and previous damage. The instructor resolves any doubt before use.
Inspect the tools. Check hammer head security, handle condition, clean working faces, stake surface and stake mounting. Remove defective equipment from use.
Mark the courses. Use dividers or an approved marker to create evenly spaced guide lines appropriate to the exercise. Avoid permanent scratches where the finish specification prohibits them.
Set the work height. Position the stake so the learner can maintain a stable stance, relaxed shoulders and controlled hammer path. Establish an exclusion zone around the swing and workpiece.
Demonstrate support. Place the sheet so the intended strike zone is supported by the selected part of the stake. Show the learner how to feel and see stable contact without placing fingers in the impact path.
Make the first course. Use light, controlled, overlapping blows while rotating the work progressively. Aim for repeatability, not depth in one pass.
Inspect before continuing. Stop after a short section. Compare hammer marks, curvature and rim behaviour. Correct hand position or stake contact before reinforcing an error around the whole piece.
Complete the course consistently. Continue around the guide line with a regular overlap and rotation. Avoid isolated heavy blows.
Check material response. Note increasing stiffness, springback or surface change. Stop if cracking, folding, severe distortion or loss of control appears. The instructor decides whether the next stage requires annealing; learners do not improvise heat treatment.
Check the developing profile. Use a template, rule or agreed reference. Inspect symmetry, rim level, local dents and evidence of stake marking.
Record and reset. Mark the stage reached, note any correction required, clean the bench, return tools safely and segregate clean offcuts or scrap by material.

The demonstration should be repeated slowly enough that learners can explain why each tool and material choice was made.

What to Watch in a Raising Video

When viewing a raising-versus-sinking demonstration, do not copy only the hammer motion. Use a structured observation sheet:

Where is the sheet supported?
Which surface of the stake is being used?
Does the work rotate continuously or intermittently?
How are the blows overlapped?
When does the maker inspect rather than strike?
What signs show that the material condition is changing?
Which operations would require additional controls in your workshop?

Common Errors and Corrective Thinking

Common error	Likely effect	Better response
Striking too far from the support	Buckling, creasing or uncontrolled dents	Re-establish the supported zone and practise placement slowly
Using excessively heavy blows	Deep marks, local distortion, fatigue and poor control	Reduce force and improve consistency
Leaving gaps between blows	Uneven movement and a faceted profile	Use planned overlap and regular rotation
Repeatedly hammering one local area	Local stretching, thinning or distortion	Return to the course plan and distribute work
Using a stake with the wrong radius	Poor contact, narrow marks or incorrect curvature	Select a support that matches the current profile
Working with a scratched hammer or stake	Repeated surface defects	Stop, isolate the tool if defective and use an approved clean tool
Continuing after strong work hardening	Greater risk of cracking and loss of control	Stop for instructor assessment of material condition
Trying to fix shape by planishing	Smooth surface but incorrect geometry	Correct the profile first, finish later
Ignoring the rim	Wavy, out-of-round or tilted opening	Inspect rim level and symmetry throughout the process
Using unidentified or coated sheet	Unpredictable forming and possible exposure risk	Use traceable stock and follow material-control procedure
Poor body position	Fatigue, inconsistent blows and reduced accuracy	Adjust work height, stance and session length
Treating PPE as the whole safety system	Hazard remains uncontrolled at source	Apply the hierarchy of control and task-specific safe system

Quality Criteria

A raised surface or hollow form should be assessed against the drawing, sample, template or agreed craft specification. Useful criteria include:

Criterion	Evidence
Profile	Curvature follows the specified template or design intent without unintended flats or bulges
Symmetry	Axes, rim and visual mass are balanced where the design is intended to be symmetrical
Rim	Opening is controlled, free from cracks and within specified roundness or geometry
Surface	Hammer marks are intentional and consistent or are reduced to the specified finish
Tool marking	No unintended deep stake marks, scratches, pits or transferred grit
Material integrity	No cracks, tears, folds or uncontrolled thinning
Dimensions	Height, diameter, width and other key dimensions meet tolerance
Course consistency	Form develops evenly rather than through isolated corrections
Edge condition	Edges are safe and prepared for the next operation
Traceability	Material, stage, inspection findings and corrective actions are recorded when the job requires them

Quality is process evidence as well as appearance. A shiny surface does not compensate for a cracked rim, unknown material, excessive thinning or an unsafe method.

Tool and Material Selection Workflow

Use this sequence when planning a supervised raising operation:

Read the drawing, model or job brief.
Identify the required material grade or alloy, thickness, condition and finish.
Confirm whether the intended form will be raised cold, hot or through a combined process.
Select a blank size that allows the planned geometry and trimming allowance.
Select the initial stake radius and verify secure mounting.
Select a hammer face and mass suited to the contact area and material.
Choose layout and inspection tools that will not damage the required finish.
Identify process stages that introduce additional hazards, including cutting, grinding, heating, chemical cleaning or polishing.
Apply local risk controls and confirm learner authorisation for each stage.
Define quality checkpoints before work starts.
Plan material segregation, scrap recovery and tool care after the job.

Sustainability and Resource Efficiency

Raising can produce durable objects with relatively simple tooling, but sustainable practice requires deliberate choices.

Plan the blank. Nest circles or profiles efficiently on stock where the specification allows. Avoid cutting a large rectangle for a small circular blank without considering the remaining sheet.

Keep alloys separate. Clean copper, brass, aluminium, steel and stainless scrap have different recycling streams. Mixing them can reduce recovery value and create contamination.

Maintain tools. A well-maintained hammer or stake can remain serviceable for decades. Preventing corrosion and impact damage avoids unnecessary replacement and reduces rework.

Reduce rework. Consistent courses, regular inspection and clean surfaces use less material and less finishing energy than correcting deep dents or scratches later.

Avoid unnecessary abrasive removal. Grinding away forming errors consumes material and produces dust. Correct process control is usually preferable to “finishing out” avoidable defects.

Use known reclaimed stock carefully. Reuse can be beneficial when alloy, coating and condition are known and suitable. Unidentified scrap is not a sustainable choice if it causes failure, contamination or hazardous exposure.

Consider heat input. Cold forming can avoid fuel use for some operations, but not every material or design is suited to cold raising. Energy reduction must not override metallurgical requirements or safe process design.

Design for longevity and repair. Raised vessels and architectural elements can be made to last, be refinished and be repaired. Durable work often has a lower lifetime material demand than disposable work.

Inclusive Workshop Practice

A good vocational workshop allows different learners to demonstrate competence without lowering the safety or quality standard.

Adjust bench or stake height where practical to support neutral posture.
Provide left- and right-handed demonstrations where tool geometry permits.
Use clear visual tool labels and consistent storage locations.
Provide written, visual and spoken instructions for key sequences.
Allow hearing protection needs to be built into communication methods.
Use profile templates and tactile demonstrations to supplement verbal descriptions.
Schedule shorter hammering intervals where this supports control and fatigue management.
Do not equate physical strength with craft competence; efficient tool selection and controlled technique matter.
Make reasonable adjustments through the training provider while preserving essential safety controls and occupational outcomes.

Glossary

Term	Practitioner meaning in this module
Raising	Forming sheet progressively into a three-dimensional or hollow form by controlled hammering over a support
Course	A planned band or path of overlapping hammer blows around the work
Stake	A rigid forming support with a shaped working surface
Raising hammer	A hammer with a face or peen selected to move metal in controlled raising passes
Planishing	Light finishing hammering over a smooth support to refine surface regularity
Sinking	Forming depth by stretching sheet into a hollow support or depression
Ductility	Ability of a material to deform plastically without fracture
Malleability	Ability to deform under compressive loading
Work hardening	Increase in strength and hardness caused by plastic deformation
Annealing	Controlled heat treatment used to modify material condition and restore working properties where appropriate
Temper	Defined material condition resulting from mechanical or thermal processing
Burr	Sharp raised edge or projection left by cutting or machining
Springback	Elastic recovery after the forming load is removed
Datum	Agreed reference point, line or surface used for measurement
Profile template	Gauge used to compare the developing form with the intended curvature
Planishing stake	Smooth support matched to a finishing operation
Traceability	Ability to identify material, process stage and relevant records
PUWER	Great Britain regulations governing the provision and use of work equipment
COSHH	Great Britain regulations for controlling substances hazardous to health

Reflection

Before moving to the interactive tasks, reflect on these questions:

Which defects in a hammer or stake would affect both safety and surface quality?
Why is “copper” an incomplete material specification?
What changes when a cold copper exercise is replaced by hot-raised steel?
Why is an organised raising course easier to control than random hammering?
At what points should you stop and inspect instead of continuing to strike?
Which controls reduce a hazard at source, and which merely protect the individual?
How could your workshop reduce scrap without introducing unidentified materials?

Interactive Tasks

Quiz: Test Your Knowledge

What is the main function of a raising stake? (To provide a controlled solid support for forming the sheet) (!To sharpen the edge of the sheet) (!To measure the alloy composition) (!To replace the need for inspection)

Which statement best distinguishes raising from sinking? (Raising forms sheet progressively over a solid support) (!Raising always removes metal from the blank) (!Sinking always uses a planishing hammer) (!Sinking can only be performed on steel)

Why should a raising hammer face be clean and sound? (To avoid transferring unintended defects into the work) (!To make the hammer head heavier) (!To remove the need for a stake) (!To prevent the sheet from work hardening)

Which information is most useful when selecting sheet for a specified job? (Alloy or grade thickness condition and surface finish) (!Colour and purchase price only) (!Metal name without grade or temper) (!Workshop location and bench height only)

What does work hardening mean in a raised sheet? (The metal becomes stronger and harder as it is plastically deformed) (!The sheet becomes permanently softer after every blow) (!The material loses all elastic recovery) (!The alloy composition changes into another metal)

Who should decide whether an introductory learner proceeds to an annealing stage? (The competent instructor following the authorised process) (!The learner without reference to local procedure) (!Any observer standing near the bench) (!The material supplier without seeing the task)

Which control is normally preferred before relying on PPE alone? (Controlling or removing the hazard at source) (!Selecting the heaviest available hammer) (!Increasing the speed of the operation) (!Ignoring exposure because the task is brief)

Why does repeated sheet metal hammering require attention to noise control? (Metal impact can create damaging noise exposure) (!Noise proves that the material is fully annealed) (!Noise prevents work hardening) (!Noise guarantees a correct raising angle)

What should you do if a stake moves in its holder during use? (Stop work and have the mounting corrected) (!Strike harder so the stake settles) (!Hold the stake with the free hand) (!Continue until the current course is complete)

Which feature is evidence of good raising quality? (A controlled profile without cracks folds or unintended deep marks) (!The deepest possible hammer marks) (!A polished surface despite an incorrect profile) (!A sharp unfinished rim)

Memory Game

Raising hammer	Tool used for controlled primary forming blows
Raising stake	Solid shaped support used beneath the active forming zone
Course	Planned band of overlapping blows around the work
Planishing	Light finishing operation used to refine surface regularity
Ductility	Capacity for plastic deformation without fracture
Work hardening	Increase in strength and hardness caused by deformation
Profile template	Gauge used to compare the developing curvature

Drag and Drop

Match the correct terms.	Topic
Raising hammer	Primary controlled forming
Planishing hammer	Surface refinement
Raising stake	Shaped solid support
Dividers	Circular layout
Tin snips	Hand cutting of suitable sheet

...

Crossword Puzzle

Stake	What shaped solid support is commonly used beneath sheet during raising?
Planishing	What finishing operation refines a hammered surface with light controlled blows?
Annealing	What controlled heat treatment can restore working properties in suitable metals?
Ductility	What property describes the ability to deform plastically without fracture?
Course	What planned band of overlapping hammer blows progresses around a raised form?
Burr	What sharp projection may remain on a sheet edge after cutting?

LearningApps

Cloze Text

Raising develops a hollow form by controlled hammering over a

. A planned band of overlapping blows is called a

. The sheet must be identified by alloy or grade as well as its

. Plastic deformation can make many metals progressively harder through

. A smooth tool face helps prevent unwanted

. The developing shape should be checked against a profile

. If the support moves during hammering, you should

. Noise should be reduced at the

before relying only on personal protection. Unidentified coated scrap should not be

. Official rules and workplace instructions always take

over this course.

Open-Ended Tasks

Easy

Tool identification board: Create an annotated photograph or drawing of five raising-work tools, naming the working face, grip or mounting point and one inspection check for each.
Material comparison card: Produce a one-page comparison of copper, low-carbon steel and aluminium using the terms ductility, thickness, condition, surface finish and work hardening.
Risk control poster: Design an accessible workshop poster showing one example at each level of the hierarchy of control for supervised hand raising.
Quality observation: Examine a tutor-provided finished or partly raised object and record three acceptable features and three features that would need further inspection.

Standard

Supervised raising sample: Under direct instructor supervision, complete one controlled raising course on an approved pre-cut and deburred practice blank, then photograph and annotate the result against the quality criteria.
Metalworker interview: Interview an experienced blacksmith, silversmith, coppersmith or artistic metalworker about how they choose hammers, stakes and sheet condition; compare their answers with this module without treating one person's practice as a legal standard.
Tool inspection checklist: Build and trial a pre-use checklist for hammers, stakes, stake holders and layout tools, then revise it after feedback from your instructor.
Process observation video: Produce a short narrated video from an authorised supervised workshop session explaining tool choice, support, inspection points and stop criteria without showing unauthorised hazardous activity.

Advanced

Tooling selection rationale: Given a drawing for a raised vessel, specify a sequence of stake shapes, hammer faces and inspection tools and justify how each selection changes as the profile develops.
Material and process plan: Compare two traceable sheet materials for the same hollow form and write a process plan addressing forming behaviour, likely work hardening, additional controls, finish and scrap recovery.
Workshop evidence visit: Visit an approved forge, silversmithing workshop, college facility or museum collection with permission and document how professional tools, material storage and quality references support reliable work.
Jurisdiction review dossier: Audit the current Great Britain HSE, England Skills England and UK BSI references used in this module, identify any updates, and write an expert-review note explaining why no automatic cross-country equivalence should be assumed.

Learning Assessment

Tool-material decision: Given three candidate hammers, two stakes and two sheet specifications, select a combination for an introductory cold-raised copper form and justify the decision through contact geometry, condition, controllability and quality.
Defect diagnosis: Analyse a sample with a wavy rim, deep isolated dents and repeated stake scratches, infer plausible process causes and propose a safe correction and prevention sequence.
Risk-control transfer: Compare a cold copper raising task with a hot-raised steel task and explain which hazards and controls change, which remain, and why the hot task requires separate authorisation.
Noise-control case: Given a workshop where multiple learners hammer sheet simultaneously, propose source, engineering, administrative and PPE controls and explain how their effectiveness should be checked.
Traceability challenge: Decide whether an unidentified reclaimed sheet should be used for an assessed raised form and defend your answer in terms of material behaviour, exposure risk, quality assurance and sustainability.
Quality evidence report: Measure a supervised sample against a drawing or template, record profile and rim findings, distinguish cosmetic from structural defects and recommend the next process step.
Professional standards reflection: Explain how tool maintenance, material identification, supervision and record keeping support both craft quality and vocational competence in a professional workshop.

Evidence of Learning

Important evidence can include:

Evidence type	What demonstrates achievement
Knowledge	Accurate explanation of raising, sinking, planishing, work hardening, annealing, material condition, stake selection and the hierarchy of control
Tool recognition	Correct identification of hammer, stake, holder, measuring and cutting tools by function and working geometry
Inspection skill	Consistent recognition and reporting of damaged tool faces, loose mountings, sharp edges, unknown materials and unsafe work conditions
Material judgement	Selection of a traceable alloy or grade, thickness and condition suited to the specified learning task
Practical skill	Supervised production of controlled overlapping blows with stable support, regular rotation and planned inspection
Quality control	Use of templates or measurements to assess profile, rim, surface, defects and dimensional compliance
Communication	Clear use of practitioner terminology when explaining choices to an instructor or colleague
Product	A documented raised sample, tool-selection sheet, inspection checklist or process plan that meets the agreed brief
Safety transfer	Ability to recognise when a different material or process introduces new hazards that require different controls
Sustainability transfer	Evidence of efficient blank planning, alloy segregation, maintenance, reduced rework and responsible material use

Expert Review Checklist

Before local delivery, a competent reviewer should confirm:

The Great Britain HSE references are still current and applicable to the actual workplace.
Any Northern Ireland delivery has been reviewed against the correct Northern Ireland authorities and legislation.
The England apprenticeship reference ST0378 version 1.1 remains current if it is used for curriculum mapping.
Any cited BSI standard is current and the required performance class or marking has been determined for the actual hazard.
Local risk assessments cover noise, sharp edges, impact, manual handling, dust, fumes, heat, fire and machinery where relevant.
Tool names match the terminology used in the specific blacksmithing, silversmithing or artistic-metalwork workshop.
Materials, thicknesses and exercises are appropriate for learner experience and available tooling.
Practical tasks have clear supervision, authorisation and stop criteria.
Accessibility and reasonable-adjustment arrangements are compatible with essential safety controls.
Media links and licences remain available and suitable for education.
No statement in this course is treated as automatic certification or cross-country qualification equivalence.

Media and Open-Licence Notes

The original explanatory text and original schematic in this course are intended to be openly reusable under CC BY-SA 4.0, subject to MOOCwiki's platform terms. Wikimedia Commons files retain the licence shown on their individual file-description pages. YouTube material remains subject to the uploader's publication and licensing terms.

Useful Wikimedia Commons media embedded in this module include:

The V&A film embedded above is particularly useful because it links professional silversmithing, raising, traditional tools, pattern and annealing in one documented studio example.