"Ed Huntress" wrote in message
...

Wax film is a traditional medium for getting separation between the
punch and the die. It used to be available commercially, but you can
make your own from 75% paraffin wax and 25% beeswax. If you have
access to microcrystalline wax, you can try that, but I haven't
worked
with it....

--
Ed Huntress

Toilet ring wax is readily available and also makes paraffin wax less
brittle when cold.