(tape holds washer in place)
Quote from: Google translated from Spanish https://blockmit.com/guias/hazlo-tu-mismo/fabrica-tu-billetera-fria-con-arandelas/
Before starting the hammering, the mold that I have created has a small defect that I have not really been able to correct without adding anything external. And it is that when hammering the first character and extracting the moving part to do it in the second, the washer moves and the final result is quite bad. To fix this I use a little electrical tape, making the result look good by not moving the washer during the whole process.
Have you tried stamping it without any tape? I'm curious to know how it moves? Does it turn or it comes out slightly when you remove the moving part?- Depending on the answer, I could help in finding a solution for each, but it would probably require modifying almost everything [if you want, I can provide the STL file on Monday (assuming that you still have some old filaments to spare)].
So in theory, it would work without tape, as long as you don't need to punch a letter twice often. Because sometimes it rotates a slight bit.
But it's really not a big issue in my opinion with the tape; quite easy with normal packing tape or wide transparent tape
I'd be glad to hear any recommendation / improvement suggestions though!
I was already thinking of modifying the file so that you can screw the jig into a piece of metal beam, but then it would be tedious to get the washer out and to replace the tape when needed. I don't really see another way to hold a round object in place other than friction to be honest.