Are you forming, or shearing? How many parts and how deep a draw? Lots of things are possible for one time. More than once, no. Any shearing, no. Forming with a shallow draw? Possible. I've seen some interestingly dangerous things done with plastic and dies though. Saw a die "blow up" one time. Plastic was used for the stripper but there wasn't enough room in the stripper pocket for the plastic when the die was fully closed. A corner of the die literally blew up off the die set and flew across the room just missing another worker. Yes, it made one heck of a BANG too.
.020 copper is getting up there though. I have a lot of experence with brass and copper forming/punch dies. Copper sheet can be annealed so it draws easier, but mostly your plastic will deform with thicker stocks. With no experience trying what you're attempting to do but knowing forming properties, I'd say it is possible with copper foils (not over .005) but when you start to get thicker the plastic will start to either deform or break.  |