Atlas 10D lathe. Modifying lead screw for longer bed? LONG STORY!

[GrifterGuru]

You will learn and you will gain experience, that is what happens over time. You will also, in time, understand and be thankful for those who offer advice based on experience and learning from doing things the hard way instead of taking an easier route when one was available.

Drilling a hole square to two vertical axiis 90 degrees apart at the same time is not easy at any time, even with a drill guide unless you have a mill or drill press and even then, there are no guarantees. It is something that comes with time and experience.

If you are hell-bent on drilling the bedway, just make sure you get it square, otherwise you will be cussing up a storm.

Have you ever drilled and tapped cast iron?

 

[silence dogood]

I once had a situation similar to yours. I took a Dremel tool with a grinding bit. Then carefully formed a flat surface. It did not have to be perfect, then take a center punch. It was enough so the drill bit would not wonder.