On Tue, 09 Jun 2009 20:08:15 -0400, Wes wrote:

I have a machine at work, I do not have to fix it in the next couple days but I'd like to
fix it before they decide to scrap it since the production job is currently running on a
tool room lathe I'd rather not have production near since I use the thing.

Anyway, if I fix it cheap, it stays, production goes back to using it and I'm happy. There
is a shaft that got loose, wallered out the woodruff key seat and wallered out the pulley.
The first thought is welding and turning it down.

I can't spray weld we are not equipped so that is off the table. The metal adder
available is a wire feed welder.

The area needing rebuilding is located between two threaded sections. That makes welding
a bit tricky.

Nevermind, welding isn't looking so great, I'm not that good.

Okay, is 1144 a good steel for making an input shaft for a lathe? It isn't highly
stressed.

But since I posed the question, how would you build up a shaft where you had to protect
the threaded sections and build up a damaged key seat. Might as well learn something. You
only have a wirefeed welder to work with, no spray welder.

Wes

If the issue is the key seat, can you just make a new one on the other
side of the shaft?

I once did that on a Chevy 350 crankshaft -- which was still in the
engine, still in the vehicle. It'd tossed a harmonic balancer. I
made a jig to use with a Dremel. A whole buncha abrasive discs and an
hour or two later, working under the truck, I had a nice snug new key
seat in the nose of the crankshaft. Broached a new seat in the
harmonic balancer, reassembled, no further problems.