Thanks for the kind words. The 10mm cutter was used on the router to reduce the thickness from 12.7mm to 10mm (part is 110*110*10mm)... I used 0.8mm depth of cut.

Quote Originally Posted by jcb121 View Post
I'll do it with a 0.5mm bit.
I'm going to use a 0.5mm slitting saw - bought one from Arc Euro recently. It's cheaper than the slot drill and much less likely to break.

Thanks for the offer with the tap, but I think we're going to use the M14x1 tap I have as it's less restrictive.