I have a new Hermes engraveograph that I use. It takes some skill but it gets the job done.
You need to be able to fix and repair it. there's no parts made for these old machines anymore.
Mike
Looking for 57mm recoilless rifle parts. M18 or any variant. Ww2 or later. Cases, cut receiver/barrel. Firing cable. Small pieces or large.
Whatever you have.
Thanks Mike.