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Suggestions CNC BITS ?!?!


New Member
I was wondering what is the best bit companies use to cut .040 metal with, i will be cutting out individual letters for a lobby sign. Thanks in advance!

We use a Shop Bot CNC machine



New Member
2 Flute or O flute bit is what you want. I'd go with a 1/8" or 3/16" bit typically.

Bigger issue will be the hold down. .04" aluminum cuts fine in 1 pass with a decent machine. Holding letters down, especially smaller ones, can be tricky. If you don't have a really good vac setup, you're going to want to glue the material down to a spoilboard.