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Die:
The
die is easy to make, but isnt necessary if you are only doing
a few hinges. You can fairly easily roll the barrels hot around
a pin mandrel, even for very small hinges.
We
use 01
tool steel for our dies, though you could use mild steel (A36) with
a Super Quench heat treating.
A block of metal large enough for the die is found. A hole with
a diameter (slightly larger than the pin thickness and 2 X stock
thickness) that will allow the material to roll and not be too tight
or too sloppy is drilled. Two hacksaw cuts are made down to the
hole (we use two blades in the hacksaw cutting at the same time
for a nice, narrow slot). The hole and slot are cleaned up with
files (chainsaw files have little taper for the round hole) and
we further polish the die with Clover Compound.
If
you are going to pound the material through the die rather than
using a press you need to make a pusher so the hinge edge isnt
marred.
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