Mr. Flatline's Up!,
Thanks, your method works the best of anything I've tried so far. Plus, I've discovered a use for all those pencils I've been hoarding the last 30 years. I found that setting the Z stop on the mill and dwelling for about 4 seconds yielded the most regular results. I think the elasticity in the eraser cushions the tool; it doesn't put too much force on the work, but still maintains contact.
Mr. ImanCarrot,
Slowing down the spindle indeed gave me better results on the brass. Thanks.
I think doing a curved surface would require a fixture. I also studied the rifle bolt sites, and that sems to be the only way you could hold and index a cylindrical or eliptical object
Tom |