Thought I would show you guys this, I had a few of these laying around and thought why not? I designed this in Cadkey - took a while to draw over a few mornings. I have been engraving .1 aluminum drops that I bought from my local machining shop for .60 lb… They are pretty fun to do. Doing the family tree on a bunch of them and was mainly using a .0625 ball, but was not getting good results in the letters because I had to use the no offset because they were so small I could not pocket them.
I also used 30 v bit for some which works well as long as I kept the speeds and feeds down a little, otherwise I was breaking off the very tip of the bit, which by the way still cut pretty good on other drawings . So another thing I did was told the machine I was using 30 v bit and was actually using the .0625 ball -worked pretty nice.
The Eiffel tower is with the .0625 ball and was not easy to get the bottom to lay flat, tried 2 sided tape but there were still areas that “popped up”. I was a little late on one corner (lower left) and the bit went thru. So what I ended up doing was threading it like using a sewing machine, I had to hold down the bottom on both sides of the bit as it was going. Also broke it up into various sections and had to re-zero z accordingly.
Would be cool if you had manual control over z-axis on the run.