hmmm, never seen those before. Approx how many did you guys make?
On another note, I found the power limit of the spindle motor tonight. No damage done to the machine and there was still a lot left of the part to mill off so it was OK. Spindle bogged, internal breaker went and the mill kept going, twisting the part in the vise and scraping the insert along the top.
It was running 1" width of cut (Sherline 1.125" single insert facing tool), .05" depth at 30 IPM in 360 brass. Too much. Cut the feed down to 15 IPM and it runs fine. Just calculated it, was 1.5in^3/min, now .75in^3/min. Still very respectable.
Serge