Hobby dills tiny drill holes. Look into any Dremel box
and you will have half a dozen.
Martin

On 7/19/2017 9:45 PM, Ed Huntress wrote:
On Wed, 19 Jul 2017 21:18:52 -0500, 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

Google "small hole drilling." In many of the links you'll find
comments about the applications. There are many, from medical devices
to aerospace to process screens and filters.