How do choose the correct solid carbide end mill for cutting plastic?

Question

How do choose the correct solid carbide  end mill for cutting plastic?

Accepted Answer

MSUTOOLS: Have you ever been come cross the end mil broke after the first cutting? What should I do? Here we like to make analysis with you, firstly ,if you work plastic, please tell your supplier the workpiece, then we will design the end mill for your working material. such as the plastic, you cannot use a 45 helix angle to work piastic, as cutting plastic need sharp cutting edge, big chip groove, so the best choice is use 30 ° helix angle.

if you use a end mill cutter which is for steel, of course, your cutter will be break as below photo.