The Worn Used and Abused

lundi 4 mai 2015

The lathe mentioned in my last post about the nose thread, is an older 9A, #A1739 for those who track numbers. Its worn, been abused and is generally full of 64 years worth of crud.
If I'd seen it before I bought I would have left it there.

I am dismantling to rebuild, it could be a long job.

Currently I am working on the compound slide. The locking studs are tight in their bores, and I cannot remove them. There is a small amount of vertical movement in the compound, but it will only swivel around 180 deg. Looking a the underneath of the boss, you can see where it has been deformed to the point of cracking. Its either been hit very hard in an attempt to remove it, studs over tightened, or otherwise mistreated.

So now I am looking for ideas on how to remove the studs and then the compound. I don't think the studs rotate, so reverse drilling won't help. I could attempt to drill, tap and thread and pull them out. Does anyone know how hard they are? Or attempt to mill 2 slots in the underside of the boss, lifting the boss out with the studs still in place.

Any ideas, good or bad, welcome.
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