Re: Best size end mill for milling perimeter of PCB? #mill

John Ferguson

EM3E8-0100-15V 0.0100in. (0.254mm) tip dia., 3-flute 15° tapered stub trace-isolation bit, 0.020 in. DOC, 1.42 in. (36mm) OAL

This is what I use for routing traces on my 6040.  I get them from Precise Bits in Colorado.

I run them at 24000 rpm and get really nice results.  As I said, I use a different bit for cutting out the perimeters.


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