Ok before I begin, I am not minting any coin known to man. It's just going to be a token with my school initals. Essentialy I need to make a screw press that was used to mint coins to strike some small blanks. I have no idea where to start. It's for MWH (Modern World History) we have to cover an invention that revolutionized a special field. So instead of hand striking coins we had the screw press. If you guys and gals have anything that could help, please let me know below or PM me. (I'll probably respond a bit quicker by email). Thanks all and I know this is a strange topic, but it's hard ya know?
A handloading press for ammunition reloading may work but it isn't a screw press. It would probably work if you use a soft enough blank anyway.
I once owned an antique book binding press that was heavy duty and had a wheel to turn on a screw. Bushing press might work? But a huge C clamp mounted in a vise may work too.
I would investigate available vises over c-clamps. The clamps have a tendency to "wander" when under pressure, so any even strike is almost impossible. There are many types of vises, but planar stability (no side-to-side movement) is key.
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Acquiring most of the materials shouldn't be that hard, there really isn't that much to a screwpress. The on't problem part I can see is the screw itself and possible the plates it runs through.
If you all have any links to specific products you may suggest, feel free to send them my way. As of now I have a c-clamp or 2 in the garage. Should I just engrave straight on the clamp or what? Thanks!
The major difference between the presses shown above and a screw press for coining is the pitch of the screw. these presses look to require multiple rotations of the screw to travel an inch. The screw press I use for striking coins travels 3.5 inches for every revolution of the screw, multiplying your force quite a bit. I set up the mini mint that the ANA has at its museum and as you can see in the first video, the presses are a bit different. The big one weighed around 300 pounds and even then, the biggest token we could strike reliably was quarter sized in pewter and nickel sized was best. If you want to stick with coin related, a Castaing machine is far easier to build and was one of the first reasonably successful changes that cut down coin clipping and providing truly round coins. The second video is the Castaing in operation
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Posted 10/23/2018 10:39 pm
