As a spin off from a jade carving project, I’ve developed a complex
surface that I wish to press into metal.
Problem is, I can do this on one surface of a die, but it will be
difficult to do this on 2 halves of a die. So, the thought was
raised, lets use 1/2 of a die, and press into urethane or other
material to provide hydraulic back pressure.
Any suggestions on materials to use? I have a 15 ton press, so
should be adequate for small 1 square inch) surface areas.
regards
Mark-
The type of plastic/rubber/stuff you use is dependent upon many
factors, mostly how much detail you need and if you “contain” the
flow of the plastic. A great source of is Bonneydoon
engendering (http://www.bonnydoonengineering.com), I know it has been
sold, I think Phil Poirier is now in charge. They sell urethane,
presses and accessories and have a discussion list which would be a
great source of knowledge. Cynthia Eid, Dar Shelton and Jim Binnion
who post on this list are also VERY knowledgeable on this subject.
It would also be possible to make the other half of the die with
metal reinforced epoxy if you are pressing soft metal like annealed
sterling silver.
If you are in Denver, I have a Bonneydoon 20 ton press with a variety
of urethanes if you want to try something out. (marlin at cohrs dot
org)