> I need to order them online. I can't find tungsten carbide bits
> anywhere locally.

For many purposes 'high speed steel' drills are liable to be good
enough and are much more forgiving.
Tungsten carbide bits are hard but fragile. Put too much side force on
them and they vanish instantaneously (or, that's what your eye doesn't
see happen). For small drills "too much" is not very much at all. You
don't want to handhold a drill when using small TC bits. For drilling
occasional 3mm holes in PCBs a good steel bit will last a long time.



       Russell
--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.