I’m pretty darn excited about taking a pass with a 1/32” tool bit on brass key yesterday. I cut .5mm deep and cut a few lines. The tool bit I used is not made to cut metal. It’s got like a nine to one reach. This means the tool is nine times longer then the diameter. It did break after an inch of cutting. It’s rather dumb that I tried a long reach tool, but it did not chatter. I did not doubt the mill could cut metal, I just never tried it. Bits & Bits has like 3 to 1 reach cutters (like .5mm diameter and 1.5mm cutting length) that would work fine.

Even though my Revo mill can cut metal, I am not sure I want to mill metal, as it would be too slow for this project. I would have to go to a smaller coin size. Mills this size I guess could cut four to six 38mm coins VS about 24 waxes a day. I would rather use a Minitech for metal then a Revo.

I can get the coins cast for far cheaper then milling. At some point I think I could custom build multi spindle wax mills at a price of less then $1000 per spindle that could run months 24 hours a day without breaking down. I only need to cut 1mm of wax! It would be nice to get the price of a whole coin (38mm x 3mm) under a dollar.