Thanks Ken! I tend to be conservative, especially with small
So 1/32" 2 flute HSS endmill
3 ipm feed, 10,000 rpm and.010" depth of cut. I used the same
feedrates for the titanium ones I've been doing. The drag engraving
can go faster, I usually bump it up a bit.
You could probably go much faster, but as they say, slow and
steady...I did accidentally program some gear earrings at 10 ipm and
they cut fine but raised a bigger burr. As it is now the cut has a
minimal bur and is easy to clean up. Also the silver chips kind of
pile up and are easier to reclaim, although my mill is very sparkly
For the titanium I used plain water as coolant as I didn't want the
tape to let go. I cut the silver dry.
I've been having a lot of fun with the methods since I posted that.
When I sell one pair on Etsy, I can just whack out another in short
order. I also found that the double sided tape holds wax pretty well,
who would have thought? (That was for a job with a.010 carbide