We are engraving polycarbonate with a "D-bit" style tapered cutter at 12,000 RPM to typically 0.4 mm on our Men's Shed router.
There are problems with the swarf sticking to the cutter, and one of members is trialling a "turps/baby oil" mixture with some limited success.
What do others use for this application ?
Is a brush adequate, or do we need a spray ?
Thanks for any assistance,
John