http://www.vellemanusa.com/us/enu/product/view/?id=500103
Various places have resharpened, retired from production use, carbide
bits. One example (among many) at
<http://www.allelectronics.com/make-a-store/item/DRB-9/9-PIECE-ASSORTMENT-USED-CARBIDE-DRILL-BITS/-/1.html>
Carbide is kind of brittle, though. I usually go with high speed steel,
which are a bit more forgiving of hand-held drilling. (No pun intended
there. Really!). MicroMark is my usual toy store, er ah, go-to place for
things like that. Sets available
<http://www.ares-server.com/Ares/Ares.asp?MerchantID=RET01229&Action=Catalog&Type=Product&ID=26104>
or individual sizes, down to 0.0135 inch.
<http://www.ares-server.com/Ares/Ares.asp?MerchantID=RET01229&Action=Catalog&Type=Product&ID=15186>
--
Rich Webb Norfolk, VA
Enco has them. www.use-enco.com Solid carbide PCB drills in sizes to #80
(0.0135) 1/8 shank. Also HHS steel, Black, TiN in sets #61 to #80 (cheap
about $10), #1 to #60, A to Z, fractions drills and metric drills.
The carbide drills are expensive, HSS is the way to go for a few boards.
how about this: http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=34640
haven't tried them but saw the link somewhere
-Lasse