[AT] Northern Tool Sale - Left Hand drills

[Ronald L. Cook]

I have been using them for years, Carl.  At least since I got a 
reversing drill.  30 years, maybe.  It works from time to time and is 
always worth a try.  Chances are, the bolt needs drilled out anyway.

Ron Cook
Salix, IA

carl gogol wrote:

> I am surprised that more list members have not extracted broken bolts 
> with left twist drills.  I have successfully removed two broken off 
> manifold bolts, one on each of my D-14s.  These are the two bolts that 
> the vertical muffler brace attach to.  There is only one reason for 
> these to break off, they have rusted over time and adhered to the 
> manifold.  Actually, the first one was first heated with an 
> oxy-acetylene torch.  It backed out with the left twist drill almost too 
> easy.  Being fortified with success, I decided to try the other without 
> heat.  Although I had to drill a second pass with a larger size, it too 
> came without a lot of persuasion.  I only wish that I had a drill press 
> that would reverse so as to drill a bit more securely for some other 
> situations.  Maybe I'll get an old Bridgeport mill someday. YMMV.
> Carl Gogol
> Manlius, NY
> AC 170D
> (2) AC D-14, AC 914H
> Simplicity 3112 & 7116
> Kubota F-2400
>