Sounds like a job for chemical milling using a photoresist mask rather than using the Tormach. There are some kits that use a laser printer to make the resist mask. See:
http://www.fullnet.com/~tomg/gooteepc.htm I bought a kit from Digikey for making masks using a laser printer to etch SS and BeCu thin sheets. I use Ferric Chloride or Ammonium Persulfate. However you might find what etches Molybendium.
Don