On 2017-07-20, Ignoramus17939 wrote:
I am parting out a PCB drilling CNC machine. Inside of it, there is a
good pile of a few lbs of carbide "PCB Drills". These are tiny drills
and perhaps end mills, with what looks like 1/8" shanks.

I wonder if there is any non-PCB use for them. I do realize that these
carbide drills can only be used in CNC equipment, and I have a CNC
milling machine. Trying to think of any good use cases but can't.

I've used them, in a non-CNC Cameron Precision micro precision
sensitive drill press for drilling out the web of a broken-off tap.

They typically have split points, and are in a wide range of
sizes. The colored collar around the shank helps you to pick the right
size. (That, plus measuring to get close before you select with the
color.) I don't know precisely what the color code is, but it is there.

They, of course, are great for drilling small holes in PCB
materials, like the green G10 glass-epoxy, and the blue glass epoxy
for which I don't know the name. :-)

Enjoy,
DoN.

--
Remove oil spill source from e-mail
Email: | (KV4PH) Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---