[AT] drill bits

[k7jdj at aol.com]

I wonder what type of drill bits work for antique tractor bolt removal and repairs?  I have been buying cheap throw away Harbor Freight titanium nitride coated bits but have gone back to using high speed steel bits.  Even the higher quality coated bits don't seem to work as good as the high speed steel bits.

The coated bits don't drill as well and are much easier to catch and break.  It is getting harder to find high speed steel bits. I have a drill doctor but it doesn't do a good job on the really small sizes. 

Would be interested in what others are using or doing that I might be missing.

Gary

Renton, WA

JD B
2 Cletrac model F's
1 Cletrac model W

and lots of other old iron