Heelo guys,
Simple question. I am basically profile cutting 6mm and 3mm plywood and 3mm MDF with Scrappy my home made CNC, I am cutting with 2mm 4 flute tungsten carbide end mills at 500mm/min, 1mm depth per cut @20,000rpm on KRESS. The problem is I am getting through them at a rate of knots, they are getting hot and snapping off, is there a good quality bit that will last longer than 10 minutes.
Stewart