Silver forming checklist: hammer, stake, annealing, measurement and surface control

What to take away

• Log alloy, batch, temper and starting dimensions before the first blow, because a later crack cannot be traced without them.
• Inspect the hammer head, eye and handle as carefully as the stake contour; a mushroomed head or split handle retires the tool.
• Anneal on a recorded cycle count, not on feel, and enter the reason on the traveler.
• Measure off the tool in the released state; springback is a number to record, not a gap to close by eye.
• Stop forming when a suspect line appears and inspect it before the next pass.

Stock and drawing

• Alloy, supplier, batch, temper and prior operations recorded.
• Starting length, width, thickness, mass and surface condition logged.
• Datums, centerline, bend line and keep areas marked.
• Minimum wall, edge radius and opening stated.
• Annealing and rework limits defined.
• Plated, filled, repaired or historic material held for separate approval.

Hammer

• Face clean, with the polish or texture the pass calls for.
• No chip, crack, mushrooming, loose head, split handle or sharp grip.
• Swing clearance open above, behind and beside the operator.
• Eye protection and task controls in place.

OSHA's hand and power tool requirements prohibit unsafe hand tools and require sound, tight wooden handles and impact tools free of mushroomed heads. Apply the standards that govern your workplace and pull questionable tools from service.

Stake, mandrel and support

• Working contour matches the movement you plan.
• Surface clean, with no unintended raised damage.
• Stake or mandrel secured in a rated holder.
• Base, anvil, stump or sandbag cannot shift.
• Work contacts the support at the planned point.
• Hands outside pinch and closing zones.
• Tool cannot tip or eject under a glancing blow.

Body and work cycle

• Working height allows a neutral, balanced stance.
• Grip and handle length do not concentrate pressure in the palm.
• Work rotates without overreaching.
• Blow pattern, direction and overlap stated before the pass.
• Breaks or task rotation address repeated impact and grip.

The Canadian Centre for Occupational Health and Safety's hand tool design guidance explains how handle shape, length, diameter and grip change wrist position, control and contact stress. Precision work often needs smaller dimensions than the guidance assumes, so fit the tool to the user and the task.

Annealing gate

• Alloy-specific procedure and indicators at the bench.
• Torch operator, ventilation, fire controls and hot-metal zone ready.
• Coatings, stones, solder, fills and enclosed spaces assessed.
• Heating range, time, atmosphere, cooling and cleaning recorded.
• Work inspected after every cycle.
• Cycle count and reason entered on the traveler.

Measurement gate

• Work measured off the tool, in its released state.
• Thickness checked at named high-risk stations.
• Paired features compared from a fixed datum.
• Radius, taper, depth, rim, opening or length meets the stage target.
• Springback recorded rather than corrected by guesswork.
• Finishing allowance still present.

Surface and defect gate

• Raking light shows no new sharp dent, fold, crack or embedded debris.
• Tool marks match the intended pattern and depth.
• Edges smooth enough for the next operation.
• No abrasive correction hiding a low section.
• Suspect lines inspected before further forming.
• Rework stays inside dimension and thickness limits.

Closeout

• Final dimensions, images, tool pair, cycles and deviations attached.
• Tools cleaned, inspected and stored.
• Filings and scrap keep their alloy identity.
• Acceptance, rework or rejection signed and dated.

Common questions

Can a polished hammer face still be unsafe?

Yes. The head, eye, handle, balance and task fit all matter. A clean face says nothing about a loose head or a split handle.

Should measurements be taken on the mandrel?

No. Accept on released measurements, because springback and tool taper both change the reading. A number taken on the tool is a forming reference, not a pass or fail.

Is annealing required after a fixed number of blows?

No universal count applies. Work from the documented limits for the alloy and process you are running, and record each cycle.

Can a deep tool mark be polished out later?

Only if the measured material-removal and surface limits allow it. Polishing to hide a low section thins the wall, and that shows up at the next forming pass.