Homebrew PCBs

Hello,

   I just bought two packs of 50 PC drill bits from Harbor Freight 
tools.  $10/kit, plus shipping, plus California sales tax.  So for about
$30, I have 100 drill bits.  Here's my review:

   I was worried about what sizes they would give me.  Turned out 
pretty good though.  Out of the 100, maybe 25 are "thin as a human hair"
and therefore pretty useless.  And another 10 are pretty big - 1/8" or 
so.  All the rest are what I would call useful sizes.  There was an 
especially large quantity of #71 bits - a very useful size.  

   Each set of 50 bits came in a cardboard box with a sort of tray 
folded into it with the bits nested in holes in the tray.   They were 
not in any particular order, and I sorted them by size myself.

   Haven't drilled any PCBs with them yet, but they look sharp.

                          - Jerry Kaidor

"jerrytr2.com" <jerry@...> writes:
> Out of the 100, maybe 25 are "thin as a human hair" and therefore
> pretty useless.

I'll take any of the 13's (#80) and 14's (#79) you'd otherwise
discard.  I use those the most.  Or you could do what I do, and use
those for through vias - they're perfect for wire wrap wire or the
individual strands from 22 gauge speaker wire.  Assuming you can drill
without breaking them, of course.