Cross slide question


Don Verdiani
 

I am working on a mystery,and thought I would ask you all before I start taking things apart. It’s a Heavy 10 with taper attachment, large dials, thrust washers installed, etc.. When I make an adjustment with the cross slide moving “in”, everything is nice and smooth, predictable, and I get the cut I expect. When I make an adjustment “out” (away from centerline). It feels like there is a rubber washer in the someplace. The dial springs back a couple thousands from where I want it to be, and the cut is imprecise, so I have to be careful, and take small moves to get the required dimension. I have a feeling it has something to do with the taper attachment, but I don’t remember it being there when I installed the taper attachment several years ago. Any thoughts on what I should be looking for?

 

Don Verdiani

Pennsylvania


mike allen
 

        Is the top handle on the taper attachment loose ?  Maybe it might be time to pull the cross-slide & clean things out ?

        animal

On 9/7/2022 3:15 PM, Don Verdiani wrote:

I am working on a mystery,and thought I would ask you all before I start taking things apart. It’s a Heavy 10 with taper attachment, large dials, thrust washers installed, etc.. When I make an adjustment with the cross slide moving “in”, everything is nice and smooth, predictable, and I get the cut I expect. When I make an adjustment “out” (away from centerline). It feels like there is a rubber washer in the someplace. The dial springs back a couple thousands from where I want it to be, and the cut is imprecise, so I have to be careful, and take small moves to get the required dimension. I have a feeling it has something to do with the taper attachment, but I don’t remember it being there when I installed the taper attachment several years ago. Any thoughts on what I should be looking for?

 

Don Verdiani

Pennsylvania


m. allan noah
 

Sounds like regular old backlash to me. Are you turning an internal feature when you feed outward?

allan


On Wed, Sep 7, 2022 at 6:15 PM Don Verdiani <DLVerdiani@...> wrote:

I am working on a mystery,and thought I would ask you all before I start taking things apart. It’s a Heavy 10 with taper attachment, large dials, thrust washers installed, etc.. When I make an adjustment with the cross slide moving “in”, everything is nice and smooth, predictable, and I get the cut I expect. When I make an adjustment “out” (away from centerline). It feels like there is a rubber washer in the someplace. The dial springs back a couple thousands from where I want it to be, and the cut is imprecise, so I have to be careful, and take small moves to get the required dimension. I have a feeling it has something to do with the taper attachment, but I don’t remember it being there when I installed the taper attachment several years ago. Any thoughts on what I should be looking for?

 

Don Verdiani

Pennsylvania



--
"well, I stand up next to a mountain- and I chop it down with the edge of my hand"


Retired Gunsmith
 

Also, check that the compound screw is also moving out, or you get the backlash in the compound added to the backlash in the cross slide.

Thanx and Good Shootin'
Derrick Martin
ask_derrick@...


-----Original Message-----
From: m. allan noah <kitno455@...>
To: SouthBendLathe@groups.io
Sent: Wed, Sep 7, 2022 3:49 pm
Subject: Re: [SouthBendLathe] Cross slide question

Sounds like regular old backlash to me. Are you turning an internal feature when you feed outward?

allan

On Wed, Sep 7, 2022 at 6:15 PM Don Verdiani <DLVerdiani@...> wrote:
I am working on a mystery,and thought I would ask you all before I start taking things apart. It’s a Heavy 10 with taper attachment, large dials, thrust washers installed, etc.. When I make an adjustment with the cross slide moving “in”, everything is nice and smooth, predictable, and I get the cut I expect. When I make an adjustment “out” (away from centerline). It feels like there is a rubber washer in the someplace. The dial springs back a couple thousands from where I want it to be, and the cut is imprecise, so I have to be careful, and take small moves to get the required dimension. I have a feeling it has something to do with the taper attachment, but I don’t remember it being there when I installed the taper attachment several years ago. Any thoughts on what I should be looking for?
 
Don Verdiani
Pennsylvania


--
"well, I stand up next to a mountain- and I chop it down with the edge of my hand"


Andrei
 

Take it apart and check. It could be gunk, swarf, mods from prior owner, or just plain ol'e backlash. Can't be sure until it is all in pieces on your workbench and thoroughly cleaned up. 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of mike allen <animal@...>
Sent: Wednesday, September 7, 2022 6:30 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cross slide question
 

        Is the top handle on the taper attachment loose ?  Maybe it might be time to pull the cross-slide & clean things out ?

        animal

On 9/7/2022 3:15 PM, Don Verdiani wrote:

I am working on a mystery,and thought I would ask you all before I start taking things apart. It’s a Heavy 10 with taper attachment, large dials, thrust washers installed, etc.. When I make an adjustment with the cross slide moving “in”, everything is nice and smooth, predictable, and I get the cut I expect. When I make an adjustment “out” (away from centerline). It feels like there is a rubber washer in the someplace. The dial springs back a couple thousands from where I want it to be, and the cut is imprecise, so I have to be careful, and take small moves to get the required dimension. I have a feeling it has something to do with the taper attachment, but I don’t remember it being there when I installed the taper attachment several years ago. Any thoughts on what I should be looking for?

 

Don Verdiani

Pennsylvania


Don Verdiani
 

Thanks for the suggestions. It turned out to be simple. The double nuts/bushings/bearings at the end of the taper attachment shaft were all gunked up with oxidized oil and a little swarf. They were not on my physical (or mental) lube list. Cleaned them up and everything is once again fine!

 

Thanks, group!

 

Don