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Thin Brass Wire Drawn Through a Drawplate
Thin brass wire is drawn from brass rod through the holes of a drawplate one size at a time, lubricated with beeswax and annealed whenever it stiffens. The volume stays the same, so the wire grows longer as it gets thinner.
The picture: a small coil of brass wire.
Intermediate
Half a day
Instructions
1
1
Ready the rod
Ready the rod
Take brass rod a little larger than the plate's largest hole, or hammer it down to that, and anneal it: heat to a dull red and quench.
Materials for this step:
Brass Rod0.1 m
Water5 litersTools needed:
Anvil
Cross Peen Hammer
Propane Torch
Blacksmith Tongs
Quench Bucket2
2
Taper the end
Taper the end
File the first 2 cm to a long taper so it pokes through the hole.
Tools needed:
File Set
Bench Vise3
3
Set up the plate
Set up the plate
Clamp the drawplate in the vise, tapered side of the holes toward you, and rub beeswax on the rod.
Materials for this step:
Beeswax5 gTools needed:
Steel DrawplateBench Vise4
4
Draw
Draw
Push the taper through the first hole it will not slip through, grip it with the draw tongs and pull it through in one steady pull, straight out from the plate.
Tools needed:
Draw TongsSteel Drawplate
Leather Work Gloves5
5
Next holes, and anneal
Next holes, and anneal
Draw through each smaller hole in turn. When it gets stiff, coil it, anneal it to a dull red on a fire brick and quench.
Tools needed:
Propane Torch
Fire BrickQuench Bucket6
6
Measure and coil
Measure and coil
Stop at the size you need, measured with the caliper. Anneal it once more for soft wire and coil it.
Tools needed:
Digital Caliper 6-Inch7
7
Length from the rod
Length from the rod
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Tools Required
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