Well, we had to make some brass doughnuts the other day for the brass feet for the Concertina Hinge Game Table we are building. I was faced with drilling big holes, bandsawing and turning and sanding some small pieces of 1/4" brass. If it were a wood shape, I would step up the the cnc and cut it in about two seconds. We had cut some thin brass before while repairing an antique clock and I thought we might as well try the thick stuff. Once we figured out the feeds and speeds, Trevor made short work of it .... It's always great to discover a new use for the CNC..... Click the photos for better viewing ...
Trevor first cut the inside hole and the outside shape with a 1/4" super o bit leaving a 1/32nd skin on the bottom
Then he switched to a round over bit, cut the first side, routed a pocket into the spoil board, and, holding the doughnut down with a screw and washer, rounded the back side ... viola ... about 10 minutes, well spent. We're thinking of building a merry-go-round ...