Reply To: Cutting steel with mpcnc



You should try a Adpative/tricoidal type cut, a straight cut is the hardest cut to perform on any material as you are cutting with 50% of the bit adpative/tricoidal cuts with 25% or less, the part you want and gives you time to keep it cool and get the chips out of the way.

Red means it has gone way to far past the point of no return. If you use a bit and it is permanently discolored it is probably worthless. When it gets to hot the the cutting edge is even hotter and instantly gets destroyed on contact.