After reading here on CNC Zone I had an idea for combining my hobby of faceting (gem stone cutting/polishing) and CNC. This could be a very difficult machine to design and program, or not. I am wondering if this has been done before?
The way that a faceting machine works is different from a mill or a lalthe, as the stone is adhered to a dop stick and mounted into the index head which can be rotated and the angle of cut changed, the cutters are a 6" or 8" diameter laps of varying grits of diamond. Then after one end is cut the stone is transfered to another dop stick and the second end is cut and polished.
I was thinking that this might be a neat litttle machine because the range of motion would be very small (small steppers or servos) and the feed rates would be small as well.
I am open to ideas and suggestions for a good design, I would rather avoid mistakes if I can.