| why on earth are you using carbide? go to tools steel/hss or make your own from silver steel, save your self a fortune.
I cut everything from gunmetal to cast iron to nylon and never use carbide. I only go to caride if its specified in the job or im on a lump of stainles steel .
My CNC machines run tipped tools but thats another task all together.
Plastics just dont need tipped tools and especialy in that size. what feed and speed are you using?
by the sounds of it too much of both, set the feed and speed to the material your working on. Also consider running coolant to help prevent the plastic plasticising around the cutter.
all the best kevin |