Raising sheet metal into surfaces and hollow forms — Safe practice

Introduction

Raising sheet metal into surfaces and hollow forms — Safe practice is a vocational learning module for learners in Blacksmithing, Silversmithing, artistic metalwork and related craft-metal disciplines. You will learn how controlled hammering over stakes can turn sheet metal into a three-dimensional surface or hollow form, while placing safe systems of work, supervision, tool condition, noise control and professional judgement ahead of speed or output.

Selected jurisdiction: United Kingdom. The legal safety content in this module is specifically scoped to Great Britain: England, Scotland and Wales, where the Health and Safety Executive, HSE, is the national occupational-safety authority. Northern Ireland has a separate occupational-safety system and is not covered by the legal guidance in this module. A vocational-standard example from England is included in a separately labelled section and must not be treated as a qualification pathway for Scotland, Wales or Northern Ireland.

Checked against current official sources: 1 September 2026. Official legislation, current HSE guidance, the employer's risk assessment and safe system of work, manufacturer instructions, local workshop rules and instructions from the responsible tutor or supervisor always take precedence over this learning resource.

No automatic cross-country equivalence is claimed. A technique video made in another country is identified by country and is used only to illustrate craft technique. Its legal, qualification and workplace context does not transfer automatically to the United Kingdom.

Supervision rule: This module never authorises unsupervised hazardous work. Learners may carry out practical forming only in an approved workshop, with suitable supervision, after task-specific instruction and permission. Hot work, annealing, pickling, powered machinery, abrasive finishing and other higher-risk processes require their own training, controls and authorisation.

The image shows stakes and hammers used by British silversmith Robert Stone. These are characteristic tools for hand-forming and raising sheet metal.

Open licence and review status

Open licence: The original learning text and task design on this page are offered under the Creative Commons Attribution-ShareAlike 4.0 International licence. Embedded Wikimedia Commons files retain the licences shown on their individual Commons pages. Embedded YouTube material is linked for educational reference and is not relicensed by this aiMOOC.

Review status: This course is designed to be ready for expert review by a competent vocational educator, practising metalworker and workplace safety specialist before local delivery. Local risk assessment must determine the actual tools, materials, PPE, ventilation, noise controls, learner-to-supervisor ratio and emergency arrangements.

Learning outcomes

After completing this module, you should be able to explain the difference between raising, sinking or blocking and planishing; identify the principal hazards associated with hand-raising; inspect basic hand tools and stakes before use; apply the hierarchy of control to workshop risks; describe why metal work-hardens during forming; follow a supervised cold-raising sequence; recognise when work must stop; assess a raised form against quality criteria; plan lower-waste working methods; and document safe professional decisions.

What Raising Does to Sheet Metal

Raising is a controlled sheet-metal forming process in which a flat or shallow sheet is progressively worked into a deeper form by hammering it against a suitable stake or other support. In craft practice, the maker normally works in organised courses around the form. Each course consists of controlled, overlapping blows that progressively move the metal rather than trying to create the final depth at once.

A key idea is that raising develops form largely through circumferential compression as the sheet is worked over the support. It is different from simply stretching the middle of a sheet into a hollow. Skilled raising can create substantial depth while retaining useful wall thickness, although local thinning, thickening and distortion can still occur if technique is poor.

The Goldsmiths' Centre in London uses practitioner terms such as hand-raising, hammering, forming, blocking, planishing and pressing in current silversmithing training. This module uses those craft terms where they are relevant.

Raising, sinking or blocking, and planishing

Raising progressively turns the wall upward and inward over a stake by controlled hammering in courses.

Sinking or blocking forms a hollow by driving sheet into a depression or over a yielding support. It is often used to establish an initial shallow form before raising, but it involves a different balance of metal movement.

Planishing uses lighter, controlled hammer blows against a smooth support to refine shape and surface after major forming. It is not a substitute for correcting a badly controlled raising sequence.

Annealing is a heat-treatment step used when the metal has become too work-hardened for further safe forming. In this module, annealing is not a learner-led activity unless the learner has separate hot-work training, has been assessed as competent and is explicitly authorised under the local safe system of work.

Work-hardening and ductility

Cold deformation changes the mechanical behaviour of many metals. Copper, silver and some other commonly raised materials become harder and less ductile as forming continues. This is known as work-hardening. A workpiece that becomes noticeably resistant, springy, cracked or otherwise abnormal is a reason to stop and seek the tutor's judgement, not a reason to strike harder.

For a novice exercise, a tutor may provide an already annealed or pre-formed copper blank so that the learner can concentrate on hand position, course control and tool contact without independently performing hot work.

This magnified copper-sheet image provides a reminder that the workpiece is a material with a real microstructure, not simply a shape to be forced into position.

A simple process diagram

Stage	What happens to the workpiece	Safe-practice focus
Prepared blank	Material, edge condition and dimensions are checked	Confirm material identity, remove or control sharp burrs and inspect for defects
Initial shallow form	The blank may already be lightly blocked or dished	Use only the method approved in the workshop
Raising course	Overlapping blows move a controlled band of metal over the stake	Keep fingers outside the blow path and rotate the work consistently
Inspection pause	Profile, rim, surface and resistance are checked	Stop if cracking, instability, excessive noise, tool damage or unusual resistance develops
Further authorised course	Form is deepened gradually	Do not exceed the tutor's demonstrated amount of movement
Annealing if required	Ductility is restored by controlled heat treatment	Carried out only by a trained and authorised person under the hot-work procedure
Planishing and inspection	Shape and surface are refined and checked	Use light controlled blows and approved finishing methods only

Tools and Materials

Typical hand tools

A supervised hand-raising station may include a raising hammer, planishing hammer, suitable polished stake, stable stake holder or bench mounting, radius or profile templates, rule, dividers or callipers as appropriate, and approved deburring tools. The exact tool set depends on the material, scale, design brief and local workshop method.

Hammer faces used for controlled metal forming should be in serviceable condition and appropriate to the intended surface. A damaged, mushroomed, loose or contaminated striking tool can create unpredictable marks or fragments and must not be used until it has been dealt with under the workplace defect procedure.

A smooth, well-supported stake gives the workpiece a controlled backing surface. A polished stake is not automatically safe: its shank, holder, mounting and surrounding clearance must also be suitable and secure.

Materials

Copper is widely used for learning hand raising because it is ductile and its work-hardening response can be observed clearly. The instructor should specify the alloy, condition, thickness, blank size and permitted process route.

Silver and precious-metal alloys are used in silversmithing but introduce material-cost, alloy-specific and finishing considerations. Do not assume that a copper procedure transfers unchanged.

Mild steel can also be formed, but force, noise, tool selection and possible hot-working requirements differ. A copper learner exercise must not be treated as proof of competence for steel raising.

Coated, plated, unknown or contaminated sheet requires additional evaluation. Heating or abrading an unidentified coating can create hazardous substances. Unknown material should not enter a learner hot-work or abrasive process.

Safe Practice in Great Britain

Status of this module

This module supports learning; it is not legal advice, a permit to work, an apprenticeship certificate, a licence or proof of competence. Completion does not automatically authorise you to use workshop equipment.

For workplaces in Great Britain, current HSE guidance is the primary safety reference used here. The employer, training provider or person controlling the workshop must translate legal duties into a suitable risk assessment, safe system of work, supervision arrangements and equipment controls.

Work equipment and PUWER

Under the Provision and Use of Work Equipment Regulations 1998, commonly called PUWER, work equipment provided for use at work must be suitable for its intended use, maintained in a safe condition and, where required, inspected. HSE also states that it should be used only by people who have received adequate information, instruction and training.

For a raising station, that principle applies to apparently simple items such as hammers, stakes and stake holders as well as to powered equipment. A loose stake, split hammer handle, damaged striking face or unstable mounting is a stop-work condition.

If powered planishing machines, presses, grinders, polishing motors, guillotines or other machinery are introduced, they require task-specific controls and training. HSE specifically requires risks from dangerous machinery parts to be prevented or controlled and requires suitable isolation where appropriate. Never bypass a guard, interlock or emergency device.

Noise

Hammering metal is a potentially high-noise process. HSE gives hammering steel at about 95–100 dB(A) as an example of an engineering process with no noise controls, and notes that fabrication-shop noise can commonly be about 85–95 dB(A). These examples are not a substitute for a workplace noise assessment because actual exposure depends on the material, support, room, hammering method and duration.

Under the Control of Noise at Work Regulations 2005 in Great Britain, the lower daily or weekly exposure action value is 80 dB(A), the upper action value is 85 dB(A), and the exposure limit value is 87 dB(A) after taking account of hearing protection. The correct response is not simply to issue ear defenders: the employer must assess risk and reduce exposure using other methods where reasonably practicable, with hearing protection used where it is still required.

Practical controls can include selecting a quieter process, maintaining tools and supports, damping or isolating resonant surfaces where technically suitable, separating noisy work from other people, limiting unnecessary exposure time, organising designated hammering areas and providing suitable hearing protection where the assessment requires it.

Personal protective equipment

HSE guidance treats PPE as one part of risk control, not as a replacement for safer equipment, engineering controls or a safe system of work. PPE identified by the risk assessment must be suitable, maintained, stored correctly and used in accordance with training.

For manual raising, the local assessment commonly considers eye protection, suitable footwear, fitted workshop clothing or apron and hearing protection where required. Gloves need task-specific judgement: cut-resistant gloves may be suitable for handling sharp sheet away from the striking operation, but a glove can reduce grip or create additional risk around rotating machinery. Follow the local instruction rather than adopting a blanket glove rule.

Tie back long hair, secure loose clothing and remove or control jewellery that could become caught or interfere with safe grip. Eye protection must not be treated as permission to use damaged striking tools.

This image illustrates safety glasses only. The correct eye-protection specification must come from the workshop risk assessment and applicable product requirements.

Hazardous substances and COSHH

Cold hand-raising clean copper sheet normally creates far less airborne contamination than grinding, polishing, soldering, welding or chemical treatment, but a complete workshop process may include those activities. Under the Control of Substances Hazardous to Health framework, known as COSHH, hazardous engineering exposures can include dust from mechanical shaping, fumes from soldering or cutting, degreasers, stripping fluids and pickling fluids.

Do not mix or improvise a pickling solution from an online recipe. Use only substances approved by the workplace, with the current safety data information, COSHH assessment, correct container, ventilation or local exhaust ventilation where required, spill arrangements and specified PPE. Waste and spent chemical solutions must be handled through the approved disposal route.

Abrasive finishing can generate metal and abrasive dust. Powered finishing must not be added to a learner task merely to hide poor hammering; it needs its own assessment, extraction controls and authorisation.

Hot work and annealing

Metal can look cool while remaining hot enough to cause a serious burn. Annealing also introduces flame, hot surfaces, possible combustion products and fire risk. Therefore the demonstration in this module uses a pre-annealed workpiece for the learner's cold-forming stage.

If further annealing is needed, the learner stops and hands over or follows the separately authorised hot-work process. Only a person trained and authorised for the workshop's annealing method may operate the heat source. The area must have the required fire controls, heat-resistant support, ventilation, hot-metal identification and exclusion arrangements.

Never test metal temperature with bare skin. Never assume that quenching, air cooling or pickling is appropriate simply because it appears in a video.

Manual handling and ergonomics

Large stakes, holders, anvils and steel tooling can be heavy and awkward. Use a handling aid or team lift where the local manual-handling assessment requires it. Do not improvise a lift that places fingers under an unstable stake.

Set the work height so that you can maintain a balanced stance, controlled shoulder movement and a neutral wrist as far as the task allows. Excessive grip force, long uninterrupted hammering sessions and awkward shoulder elevation increase fatigue and reduce strike accuracy. Planned task rotation and short recovery pauses can support both safety and craftsmanship.

Emergency and stop-work expectations

Before starting, know the workshop stop signal, first-aid arrangements, emergency exits, fire procedure and the method for reporting damaged tools, near misses and injuries. Where chemicals are present, know the local spill and eyewash arrangements.

Stop work immediately if the stake or holder moves, the hammer handle or face becomes damaged, the workpiece cracks unexpectedly, a sharp edge threatens safe control, your grip becomes unreliable, a person enters the strike zone, noise controls are unavailable, a machine guard is defeated, ventilation fails or the tutor instructs you to stop.

Risk-Control Plan for Hand Raising

Hazard	What could happen	Preferred controls before or alongside PPE	Learner action
Hammer strike	Bruising, fracture or hand injury	Correct workholding method, suitable hammer, stable stake, demonstrated blow path, spacing and supervision	Keep fingers clear, use controlled blows and stop if control is lost
Loose or damaged tool	Ejection, uncontrolled strike or tool failure	Pre-use inspection, maintenance and defect quarantine	Do not use; report the defect
Sharp sheet edge	Cut or loss of grip	Deburr where the process allows, controlled handling method, appropriate storage and task-specific hand protection	Handle by the demonstrated safe area and report damaged edges
Flying particle	Eye injury	Sound striking faces, clean work, suitable process and exclusion distance	Wear specified eye protection and stop if a tool face is damaged
Noise	Hearing damage or tinnitus	Assess, reduce at source, damp or isolate where suitable, separate people and manage exposure time	Use hearing protection if required and never remove another person's noise control
Heavy stake or holder	Crush, strain or trapped fingers	Stable mounting, handling aid or team handling, clear route	Do not move heavy tooling without permission and the correct method
Repetitive hammering	Fatigue, reduced accuracy or musculoskeletal strain	Suitable work height, tool choice, task rotation, recovery pauses and instruction	Report discomfort early and stop before loss of control
Hot work	Burn, fire or fume exposure	Separate authorised annealing station, trained operator, ventilation, fire controls and hot-metal management	Do not anneal unless separately trained and authorised
Pickle or cleaner	Chemical burn, inhalation or environmental release	COSHH assessment, approved chemical, extraction, labelled containers and spill controls	Use only under the authorised method
Abrasive or powered finishing	Entanglement, dust, ejection or noise	Guarding, extraction, suitable equipment, training and isolation arrangements	Do not use unless trained and authorised

England Vocational Context — Kept Separate from Safety Law

Country within the selected UK jurisdiction: England. Skills England lists Blacksmith as a Level 3 technical occupation and its occupational information includes safe working, hazard recognition, risk assessment, equipment inspection, PPE, COSHH and maintaining a safe working environment. Skills England also lists Jewellery, silversmithing, and allied trades professional — Silversmithing as a Level 3 occupational standard.

These are England vocational references only. They do not create a single UK qualification, do not replace HSE legal duties, and do not establish automatic equivalence with qualifications in Scotland, Wales, Northern Ireland or any other country. Check the current Skills England and awarding-organisation pages for an actual programme's approval, assessment and qualification requirements.

The aiMOOC itself does not award or certify any Skills England standard.

BSI and Machinery Standards Context

The British Standards Institution, BSI, is the United Kingdom's national standards body. BSI publishes machinery-safety standards including the ISO 12100 family covering general principles of machinery risk assessment and risk reduction. Such standards are especially relevant to machinery designers, manufacturers and those responsible for machinery risk.

A general machinery standard does not replace the task-specific workplace assessment, manufacturer instructions or legal requirements. If a powered planisher, fly press or other machine is used, the responsible organisation must identify the exact current standards and legal requirements applicable to that machine. Never assume that a standard listed in an older teaching handout is still the correct edition.

Safe Setup Before a Learner Demonstration

The following setup is for a supervised cold hand-raising exercise using a pre-annealed copper blank. It deliberately excludes learner-operated flame annealing, chemical pickling and powered finishing.

Risk assessment: Read the task risk assessment, workshop rules and tutor instructions; ask about anything you do not understand before touching the tools.
Material identification: Confirm that the instructor-specified copper blank is the correct material, condition and size and that the edge is safe to handle under the approved method.
Hammer inspection: Check the handle, head security and striking face; quarantine and report a tool with a split handle, loose head, severe mushrooming, contamination or damage.
Stake inspection: Confirm the selected stake has the required profile, a serviceable surface and a secure fit in its holder.
Workstation stability: Check that the holder or bench cannot shift under normal forming loads and that surrounding clearance is sufficient.
Noise control: Confirm the workshop's required noise controls are in place before hammering starts.
PPE check: Put on the PPE specified by the risk assessment and check that it fits and does not interfere with control.
Body position: Adjust your stance and work height so that you can use light controlled blows without overreaching or placing another person in the swing path.
Exclusion area: Keep observers outside the designated hammering zone and know the tutor's stop signal.
Emergency readiness: Confirm where to report a defect or injury and know the local first-aid and evacuation arrangements.

Step-by-Step Demonstration: Supervised Cold Raising of a Shallow Copper Form

Learning boundary: This sequence teaches controlled cold hammering only. The tutor selects and prepares the material. Any annealing, pickling, soldering, grinding, polishing or powered-machine operation is outside this demonstration unless separately risk-assessed, taught and authorised.

Design check: Compare the blank with the drawing, former, profile template or sample and identify the intended direction of raising before starting.
Safe grip: Hold the workpiece using the grip demonstrated by the tutor so your fingers remain outside the hammer path and away from pinch points at the stake.
Contact point: Rest the work against the approved part of the stake and confirm that the stake is supporting the zone being worked rather than allowing the sheet to bounce uncontrolled.
Trial blows: Make a few light controlled blows under direct observation so the tutor can check hammer face contact, rhythm, posture and workholding.
First course: Work an organised band of overlapping blows around the form while rotating the work consistently; aim for gradual movement rather than maximum depth.
Inspection pause: Stop after the course and check the profile, rim, surface marks, edge condition and whether the stake or holder has moved.
Course correction: If the profile is developing unevenly, use the tutor's correction method rather than random heavy blows on the high or low area.
Further course: Continue only if authorised, maintaining the demonstrated overlap, angle and amount of movement.
Work-hardening check: Stop if the metal becomes unusually resistant, springy or cracked; do not compensate by striking harder.
Annealing handover: If the tutor decides annealing is needed, place the work in the designated handover location and allow the authorised hot-work procedure to take over.
Planishing stage: If the form is ready and the tutor approves it, use a clean polished hammer and suitable stake with lighter controlled blows to refine rather than force the shape.
Edge and surface check: Inspect for cracks, folds, sharp burrs, unwanted tool marks, contamination and unacceptable thinning before any finishing stage.
Measurement: Compare depth, diameter, rim level and profile with the task specification using the approved measuring tools.
Close-down: Return hand tools to their designated place, report defects, segregate recyclable offcuts correctly and leave the station clean and safe for the next user.

Technique video — United States

Country label: United States. The following Art League School video demonstrates a practitioner raising a copper bowl with hammer and anvil. Watch it for hand-raising technique and sequencing only. United States legal duties, certification routes and workshop procedures are not imported into this UK module.

While watching, identify the relationship between the hammer blow, support surface and rotation of the work. Then compare what you see with your local tutor's approved method. If the video differs from your workplace instruction, follow the workplace instruction.

Common Errors and Professional Corrections

Common error	Likely effect	Safer professional response
Trying to gain too much depth in one course	Buckling, poor control, harsh marks or cracking	Use smaller controlled increments and have the tutor review the course spacing
Striking harder when the metal resists	Loss of control, workpiece damage and possible cracking	Stop and assess work-hardening or process error
Random hammering instead of a planned course	Lopsided profile, local damage and difficult correction	Re-establish a systematic sequence under supervision
Uneven rotation of the work	Lobed walls and an uneven rim	Use consistent reference marks or rhythm where approved
Wrong hammer-to-stake relationship	Dents, thinning or failure to move metal as intended	Recheck the demonstrated contact point and tool geometry
Continuing with a loose stake	Unpredictable motion and high injury risk	Stop immediately and have the mounting made safe
Using a damaged hammer face	Unwanted marks or ejected fragments	Quarantine and report the tool
Ignoring rising fatigue	Poor strike accuracy and reduced grip	Stop, recover and adjust task duration or ergonomics
Relying on hearing protection alone	Preventable noise exposure remains	Apply source, engineering and organisational noise controls first
Grinding away hammer defects	Dust, waste, thinning and hidden process problems	Correct the forming method and use only the approved finishing allowance
Treating dark metal as cool	Burn injury	Follow the hot-metal identification and cooling procedure
Improvising a chemical pickle	Chemical exposure and uncontrolled waste	Use only the approved COSHH-controlled chemical process

Quality Criteria

A safely produced form must satisfy the design brief without hiding unsafe process choices. Typical assessment criteria include a controlled and repeatable profile; acceptable symmetry or intentional asymmetry; an even, controlled rim; no cracks, dangerous folds or uncontrolled sharp burrs; wall thickness that remains within the design allowance; clean transitions between raising courses; hammer marks appropriate to the required finish; absence of deep accidental stake marks; and a final surface suitable for the specified next operation.

Professional quality also includes the process evidence: correct tool selection, inspection records where used locally, accurate measurement, documented material identity, safe handling, appropriate stop decisions and responsible waste segregation.

This hammered copper bowl from the Metropolitan Museum of Art collection is an authentic historic example of sheet metal developed into a hollow form. It is shown as an object-study reference, not as a template for the learner exercise.

Quality inspection checklist

Profile: Compare the form against the drawing, template or agreed visual standard.
Rim: Check whether the rim is level or intentionally shaped and whether it is safe to handle.
Surface: Distinguish controlled hammer texture from accidental gouges, double strikes and stake damage.
Integrity: Look for cracks, tears, folds and other defects that may make further forming unsafe.
Thickness: Where the specification requires it, measure approved locations and compare them with the allowable range.
Consistency: Check whether the course pattern and curvature develop evenly around the form.
Documentation: Record deviations and corrective decisions rather than disguising them with unnecessary finishing.

Sustainability in the Metalwork Workshop

Safe practice and sustainability often support each other. Accurate blank layout reduces offcuts; a controlled raising sequence reduces rework; well-maintained tools reduce surface damage; and correct process choice can reduce unnecessary abrasive finishing.

Keep copper, steel and other recyclable scrap streams separate where the workshop's recycling contractor requires it. Avoid mixing unknown alloys into clean recyclable scrap.

Use the minimum material removal needed to meet the design. Excessive grinding wastes metal and abrasive media and can create additional dust and noise.

Where annealing is authorised, avoid unnecessary heating cycles by planning forming stages well and following the established process. This saves energy and can reduce oxidation and subsequent cleaning.

Chemical wastes, used cleaners, contaminated absorbents and pickling solutions must be handled according to the COSHH assessment, safety data information and waste procedure. Do not pour workshop chemicals into a drain unless the responsible organisation's authorised procedure explicitly permits it.

Maintaining stakes, hammers and holders extends tool life. Repair, inspection and appropriate resurfacing by a competent person are preferable to using a damaged tool until it becomes unsafe.

Inclusive Workshop Practice

Competence is demonstrated through safe, controlled performance, not through maximum hammer force. Tool weight, work height, grip design, seating or standing arrangement and task duration may be adjusted when the risk assessment and learning outcome allow it.

Learners should be able to ask for clarification, a demonstration repeat, a recovery pause or an accessibility adjustment without being pressured to continue an unsafe action. Tutors should communicate stop signals in a form that works even when hearing protection is worn and workshop noise is high.

Where a learner has a specific access requirement, the provider should plan reasonable, task-compatible arrangements without lowering essential safety controls or asking the learner to disclose information beyond what is necessary for safe participation.

Glossary

Annealing — Controlled heat treatment used to restore workable ductility after deformation; in this module it requires separate authorisation.

Blocking — Creating an initial hollow or volume in sheet, often by working into or over a yielding support.

Course — An organised band or circuit of hammer blows worked around a form during raising.

COSHH — The Great Britain framework for controlling substances hazardous to health at work.

Ductility — The ability of a material to deform plastically without fracturing.

Exclusion zone — A defined area kept clear of people who are not involved in the hazardous operation.

Hollow form — A three-dimensional metal form enclosing or partly enclosing a volume.

Planishing — Controlled light hammering used to refine form and surface against a smooth support.

PUWER — The Provision and Use of Work Equipment Regulations 1998, governing safe provision and use of work equipment in Great Britain.

Raising — Progressive forming of sheet into a deeper shape through controlled hammering over a stake or support.

Raising hammer — A hammer selected for moving metal in the raising process; its face geometry must suit the intended operation.

Safe system of work — A defined method that integrates hazards, controls, responsibilities and the sequence needed to perform a task safely.

Stake — A shaped metal support used beneath sheet during forming and planishing.

Work-hardening — Increase in hardness and reduction in ductility caused by plastic deformation.

Reflection

Before practical work, ask yourself: What would make me stop immediately? Which risk controls prevent the hazard at source rather than merely reducing the consequence? Can I explain why my chosen hammer and stake are suitable? How will I know when the workpiece is becoming too hard to continue? What evidence will show that I achieved the shape through controlled forming rather than excessive finishing? Which parts of the task require competence beyond this module?

After practical work, compare your first and final process decisions. A good reflection records not only what went well but where you paused, asked for help, changed a setup or rejected a shortcut.

Authoritative Sources and Expert-Review Trail

Great Britain occupational safety:

HSE — Provision and Use of Work Equipment Regulations 1998 overview: Current HSE guidance on suitability, maintenance, inspection, training, guarding, stabilisation and isolation of work equipment.
HSE — Control of Noise at Work Regulations: Current action and limit values for workplace noise in Great Britain.
HSE — Employers' responsibilities for workplace noise: Assessment, reduction, hearing protection, training and health-surveillance duties.
HSE — Noise in engineering: Engineering-process examples and noise-control methods, including hammering steel.
HSE — Using PPE to control risks at work: Current risk-assessment and PPE guidance.
HSE — Extended scope of PPE at Work Regulations: Current Great Britain guidance on the 2022 amendment.
HSE — COSHH and engineering workers: Hazardous substances and control measures relevant to engineering processes.

England vocational context only:

Skills England — Blacksmith occupational map: England occupational information including safe working, hazard recognition and equipment inspection.
Skills England — Jewellery, silversmithing, and allied trades professional — Silversmithing: England Level 3 occupational standard and approved-qualification information.

United Kingdom standards and practitioner terminology:

BSI — ISO 12100 Safety of machinery: General machinery risk-assessment and risk-reduction context.
The Goldsmiths' Centre — Silversmithing Skills: Current UK craft-training terminology including hand-raising, blocking and planishing.

Media verification:

Wikimedia Commons — Silversmithing anvils and hammers.jpg: Stakes and hammers used by British silversmith Robert Stone.
Wikimedia Commons — Polished Peddinghaus round face semi-domed socket stake for metal shaping 2.jpg: Metal-forming stake reference.
Wikimedia Commons — Safety Glasses.jpg: Eye-protection image.
Wikimedia Commons — Copper sheet 100x.jpg: Copper-sheet image.
Wikimedia Commons — Copper Bowl with Lobster MET 1987.394.178 a.jpg: Hammered copper vessel from a public museum collection.
The Art League School — Hammered Metal: How to Raise a Copper Bowl: United States technique demonstration, not a UK legal or qualification source.

Precedence statement: At delivery, re-check the official pages above and any legislation or standard directly applicable to the actual equipment. Current official rules, the local risk assessment, manufacturer instructions and workplace or college instructions take precedence over this aiMOOC.

Interactive Tasks

Quiz: Test Your Knowledge

What best describes raising sheet metal? (Progressive controlled hammering over a support to develop a three-dimensional form) (!Random heavy hammering until the required depth is reached) (!Removing metal until a hollow appears) (!Heating every workpiece continuously while striking it)

What should you do if a stake becomes loose during raising? (Stop work and have the mounting made safe) (!Hold the stake with your free hand and continue) (!Strike more lightly until the end of the course) (!Wedge it temporarily with scrap while hammering)

How should PPE fit into the hierarchy of risk control? (It is used where risk remains after higher-level controls and safe systems) (!It replaces the need for tool maintenance) (!It makes a damaged hammer safe to use) (!It removes the need to assess workplace noise)

What is the lower daily or weekly workplace-noise exposure action value in Great Britain? (80 dB A) (!70 dB A) (!90 dB A) (!100 dB A)

What is the correct learner response when copper becomes unusually hard or starts cracking? (Stop and ask the tutor to assess the workpiece) (!Strike harder to complete the course) (!Use a larger hammer without permission) (!Hide the crack by grinding it away)

Who should perform annealing in the demonstration described in this module? (A trained and authorised person under the local hot-work procedure) (!Any learner who has watched the embedded video) (!The nearest person wearing gloves) (!Anyone who can light the heat source)

Which feature is evidence of good raising quality? (A controlled profile with no cracks or dangerous folds) (!Maximum depth achieved in the fewest hammer blows) (!A surface that has been heavily ground to remove all evidence) (!A rim corrected by repeated uncontrolled heavy blows)

What is the safest response to an unknown coated sheet before hot work? (Stop and identify the material and required controls first) (!Heat it briefly to see what the coating does) (!Remove the coating with an unassessed grinder) (!Assume it behaves like clean copper)

What should you do if a powered planisher is not part of your training and authorisation? (Do not use it until the required training and authorisation are in place) (!Use it at the slowest setting without telling anyone) (!Ask another learner to switch it on for you) (!Remove the guard if it obstructs the work)

Why is a planned raising course preferable to random hammering? (It develops the form gradually and makes control easier to assess) (!It guarantees that annealing is never needed) (!It removes all workplace noise) (!It makes tool inspection unnecessary)

Memory Game

Raising	Progressive hammer forming over a support
Stake	Shaped support beneath the sheet
Course	Organised band of overlapping hammer blows
Planishing	Light refining hammer work on a smooth support
Ductility	Capacity for plastic deformation without fracture
Annealing	Controlled heat treatment that restores workability

Drag and Drop

Match the correct terms.	Topic
Stable mounting	Prevents the stake from shifting during hammering
Noise assessment	Determines the required exposure controls
Eye protection	Reduces injury risk from flying particles after other controls
Annealing station	Separates authorised hot work from the cold-forming exercise
COSHH assessment	Defines controls for hazardous workshop substances

Match each control with the workshop need it addresses, then explain which controls act at source and which rely on worker behaviour.

Crossword Puzzle

Raising	What process progressively forms sheet into a deeper shape over a support?
Stake	What shaped support sits beneath the sheet during hand forming?
Planishing	What light hammering process refines shape and surface?
Annealing	What controlled heat treatment may restore workability?
Ductility	What property describes the ability to deform without fracturing?
Symmetry	What quality term describes balanced correspondence of form around an intended axis?

LearningApps

Cloze Text

Raising uses controlled hammering over a shaped

to develop a three-dimensional form. An organised band of blows is called a

. Cold deformation can cause the material to become

. A loose tool is a reason to

work. Workplace noise must be reduced through a suitable hierarchy of

. PPE is selected from the findings of a

. Chemical pickling requires controls under

. Annealing is performed only by a trained and

person in this learner demonstration. Finished work should be checked for cracks, rim condition and overall

. Safe practice includes reporting defects rather than trying to

them.

Open-Ended Tasks

Easy

Safe workstation sketch: Draw and label a raising station showing the stake, work zone, learner position, observer exclusion area and tool-storage area; do not perform practical hammering for this task.
Tool inspection card: Create a one-page inspection card for a raising hammer and stake, including stop-work defects and the correct reporting route used in your training workshop.
Risk-control poster: Produce an illustrated poster that shows the difference between controlling noise at source and relying only on hearing protection.
Vocabulary photo study: Using tutor-approved photographs or openly licensed images, label a raising hammer, planishing hammer, stake, course line and raised wall and explain each term in one sentence.

Standard

Supervised process observation: Observe an instructor-led raising demonstration and write a process log identifying every deliberate pause, inspection and control decision; do not imitate hazardous stages outside the supervised session.
Quality comparison: Compare two tutor-provided raised forms and write a technical judgement on profile, rim, surface, integrity and likely process causes of the visible differences.
Craftsperson interview: Interview a practising blacksmith, silversmith or artistic metalworker about tool maintenance, noise control, work-hardening and stop-work decisions, then distinguish personal practice from legal or workplace requirements.
Sustainability audit: Map material, energy, abrasive and chemical waste flows for a raising project and propose three changes that reduce waste without weakening safety or quality controls.

Advanced

Safe method proposal: Draft a supervised method statement for cold raising a shallow copper form, including hazards, controls, competence boundaries, inspection points and emergency actions, and submit it for tutor critique before any practical use.
Noise-control case study: Analyse a hypothetical high-noise metal-forming workshop and propose source, engineering, organisational and PPE controls in hierarchy order, clearly stating what additional measurements or competent advice would be needed.
Technique teaching video: Storyboard and produce a short training video using a non-hazardous mock-up or tutor-supervised approved footage to teach hand position, course planning and stop signals; do not stage unsafe acts for the camera.
Expert review dossier: Assemble a review pack containing your process plan, quality criteria, HSE source checks, England vocational-context note, sustainability decisions and a list of unresolved questions for a competent metalwork educator and safety reviewer.

Learning Assessment

Hazard-control reasoning: Given a scenario with a loose stake, high noise and sharp-edged sheet, rank the required responses by urgency and justify which controls prevent exposure at source.
Process diagnosis: Analyse a raised copper form with an uneven rim, local cracking and deep hammer marks and explain likely process causes, safe stop points and corrective decisions.
Transfer to new material: Explain what additional information and controls you would require before transferring a supervised copper-raising exercise to mild steel, without assuming that the same tools or process are suitable.
Work-equipment judgement: Evaluate a proposal to use an unfamiliar powered planisher and identify the PUWER-related questions that must be resolved before a learner may operate it.
Quality and safety evidence: Create an assessment record that combines dimensional quality, surface integrity, safe tool use, stop-work decisions and waste management rather than judging the finished appearance alone.
Professional source check: Revisit the current HSE and Skills England sources and produce a short change log showing whether any relevant guidance, occupational information or terminology has changed since this module was checked.

Evidence of Learning

Knowledge evidence: You can accurately distinguish raising, sinking or blocking, planishing, work-hardening and annealing; identify significant mechanical, noise, chemical, hot-work and ergonomic hazards; and explain the role of PUWER, COSHH, noise control and PPE in the Great Britain context.

Skill evidence: Under appropriate supervision, you can inspect basic hand tools, set up a stable raising station, maintain a safe grip and stance, work a controlled raising course, pause for inspection, measure the developing form and stop when conditions move outside your authority.

Product evidence: You can produce a tutor-approved shallow raised sample or equivalent simulation together with a process log, inspection record and quality evaluation. Where practical forming is not appropriate, an assessed process plan and annotated demonstration record can provide alternative evidence.

Professional-behaviour evidence: You report defects, respect exclusion zones, follow stop signals, use required controls, ask for help when the process becomes uncertain and do not bypass supervision or machinery safeguards.

Transfer evidence: You can identify which parts of your knowledge transfer to a new material or workshop and which require fresh risk assessment, equipment checks, training, standards review or vocational-context verification.

Sustainability evidence: You can show how controlled forming, correct blank planning, tool maintenance, scrap segregation and reduced rework support material efficiency without trading away safety.

OERs on the Topic

The English Wikipedia article on raising provides an openly accessible overview of the metalworking process. It is background reading rather than a substitute for local vocational instruction or workplace safety rules.