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Tail stock wobble

 

My tail stock has a serious wobble in it, from rear right to front left. Causing it to center differently depending on how tight I tighten the lock screw. The tip of the live center moves ~1/8 of an inch.

I considered sanding/lapping for a better fit; but I don't want to sand/lap away the lathe bed in the process.

Ideas on how to resolve this issue?

Also, is there a mod for making the side-to-side adjustment of the tail stock easier? I mean really, who decided one of the screws should be on the bottom?

Thanks in advance,

Jeremy
 

You can lap the tailstock by attaching sandpaper to the lathe bed with
double stick tape and running the tailstock back and forth over it. You
probably want to lap both sides at once so it doesn't develop a "lean."
Lapping will reduce its height, so you may have to shim it up
afterwards.

Also, take a look at this ("removing a ridge in the "V"):


There are all kinds of tailstock mods, look here for a bunch:




--- In 7x12minilathe@..., "cptwinderatgmaildotcom" wrote:

My tail stock has a serious wobble in it, from rear right to front
left. Causing it to center differently depending on how tight I tighten
the lock screw. The tip of the live center moves ~1/8 of an inch.

I considered sanding/lapping for a better fit; but I don't want to
sand/lap away the lathe bed in the process.

Ideas on how to resolve this issue?

Also, is there a mod for making the side-to-side adjustment of the
tail stock easier? I mean really, who decided one of the screws should
be on the bottom?

Thanks in advance,

Jeremy
 

You would lap the tailstock, not the lathe bed. I did a similar process to my saddle a while back, and your post inspired me to finally write it up.

You can see the write-up here:

?

--- In 7x12minilathe@..., "cptwinderatgmaildotcom" wrote:
>
> My tail stock has a serious wobble in it, from rear right to front left. Causing it to center differently depending on how tight I tighten the lock screw. The tip of the live center moves ~1/8 of an inch.
>
> I considered sanding/lapping for a better fit; but I don't want to sand/lap away the lathe bed in the process.
>
> Ideas on how to resolve this issue?
>
> Also, is there a mod for making the side-to-side adjustment of the tail stock easier? I mean really, who decided one of the screws should be on the bottom?
>
> Thanks in advance,
>
> Jeremy
>
 

As you have said most people would be advised to keep well clear of any work on the bed, By and large they are pretty well finished and accurate and it is the saddle and tailstock base that need work to fit. The only exception would be the undersides of the bed as these often poorly finished and full of paint runs which can prevent the saddle retaining plates being adjusted closely or the tailstock clamping evenly.

Gerry W
Leeds UK________________________________

To: 7x12minilathe@...
From: kevin.quiggle@...
Date: Wed, 6 Feb 2013 20:52:00 +0000
Subject: [7x12minilathe] Re: Tail stock wobble



You would lap the tailstock, not the lathe bed. I did a similar process
to my saddle a while back, and your post inspired me to finally write
it up.

You can see the write-up here:



--- In 7x12minilathe@..., "cptwinderatgmaildotcom" wrote:
>
> My tail stock has a serious wobble in it, from rear right to front
left. Causing it to center differently depending on how tight I tighten
the lock screw. The tip of the live center moves ~1/8 of an inch.
>
> I considered sanding/lapping for a better fit; but I don't want to
sand/lap away the lathe bed in the process.
>
> Ideas on how to resolve this issue?
>
> Also, is there a mod for making the side-to-side adjustment of the
tail stock easier? I mean really, who decided one of the screws should
be on the bottom?
>
> Thanks in advance,
>
> Jeremy
>
 

Thank you! I haven't had a chance to get back to this problem; but from the links and other reading, I'm on the right track now.

Thanks again,

Jeremy

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