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Re: Misplaced hole

 

The way I?handle problems like this is to drill the hole significantly larger and tap it. Then insert a bolt that fits the tap, using JB Weld as your thread-locking compound.? Once that sets, saw off the bolt level with the surface.??

Now, your original hole is gone and you have new metal at the location, so you can drill and tap it in the proper place with no worries.? (If it would be difficult to saw off the bolt level with the surface, you can instead saw the top of the bolt off ahead of time and manipulate the cut place it to be level with the surface before the JB Weld sets).

Mike Taglieri

On Thu, Jan 13, 2022 at 10:10 PM <thomasfkeefe@...> wrote:
My lathe had pretty poor mesh between the handwheel gear and the rack.
To address the problem I slid the rack about 1/2 inch to one side and moved the
rack down. Everything worked out pretty well. However, one hole is a bit too
high. I am thinking of a couple of ways to fix the problem.

1. Start over and drill/tap all of the holes again. Hoping not to do this, as its not
? ? clear I will succeed the second time.

2. Elongate the through hole in the rack so that the screw will go in without distorting the
? ? rack. The hole is off by about .030" and I believe there is probably enough metal
? ? above the hole in the rack to fit. I am not sure what the rack is made of. It seems like
? ? steel which I don't think is hardened. But I don't really like the idea of changing the?
? ? rack this way.

3. Fill the hole with JB Weld or some other sort of epoxy-like filler and then re-drill and?
? ? tap. I assume this wouldn't be as strong as drilling the holes in new locations (i.e., #1 above)
? ? but I don't think this will be a concern. I haven't tried moving holes this way before so I am
? ? not sure it will be easy to move the holes a small amount like this.

I would like to get some advice on what is the best way to correct this. Thanks.

Tom

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