Repairing Atlas 10" lathe

[bogstandard]

I suppose I had better qualify my statement in the last post where I stated that everything is moveable.

My Atlas didn't have a dowel pinned apron, but from your comment, I suspect yours is.

If that is the case, you shim up in a slightly different way to achieve the very tiny movement that is required.

Slacken off the top apron bolts to give you a tiny gap on the horizontal joint. Then you insert a narrow shim into either end of the joint, but very close to the vertical join. When you retighten the joint, you will find the apron has kicked out slightly, maybe with just one coke can shim, enough to cure your interferrance problem.
This will move the apron out by a tiny amount, but I wouldn't go more than a couple of shims as you will be putting a lot of stress on the dowel pins and castings. If you can't get the required clearance by shimming, remove the shims, then resort to grinding or filing a little off the peened area.

John