Date   

Re: Mystery Screw

Steven H
 

The You Tube guy in Germany is Stefan Gotteswinter.

Steve Haskell

On Jan 24, 2021, at 11:25 AM, Steven H via groups.io <stevesmachining=aol.com@groups.io> wrote:

RE: Swarf in the telescoping taper attachment itself- you might try getting some leather and covering the TTA with leather after you have it set, perhaps use magnets to secure. I see several of the You Tube guys have leather attached to their machines to help protect from swarf (Steve Summers with his large shaper, and the guy in Germany with his lathe (I forget his name, I have CRS disease).

Steve Haskell
Troy, MI





Re: Mystery Screw

Steven H
 

RE: Swarf in the telescoping taper attachment itself- you might try getting some leather and covering the TTA with leather after you have it set, perhaps use magnets to secure. I see several of the You Tube guys have leather attached to their machines to help protect from swarf (Steve Summers with his large shaper, and the guy in Germany with his lathe (I forget his name, I have CRS disease).

Steve Haskell
Troy, MI


Dial gauge attachment

trackthatpot2000
 

I made this many moons ago and I don’t use it as often as I should, but it works well and has a lot of adjustment available for a large range of diameter size.


Re: Mystery Screw

trackthatpot2000
 

I acquired the lathe before DRO were invented...before then we used VRO  “vernier” read out.


Re: Mystery Screw

eddie.draper@btinternet.com
 

The most interesting thing to come out of this for me is the fact that a cover was provided over the cross slide screw on lathes that have a TTA. Didn't know that before, and I'm fed up with digging swarf out of there! Not fitted on our 1943 14.5" toolroom lathe, so I will make one. It appears that it has unequal lengths from ends to screw hole and I assume that is so you can turn it end for end depending upon which end of the travel you are using.


Another issue is swarf in the TTA itself. Anyone got a cure for that?


Eddie




------ Original Message ------
From: "m. allan noah" <kitno455@...>
To: SouthBendLathe@groups.io
Sent: Saturday, 23 Jan, 21 At 23:52
Subject: Re: [SouthBendLathe] Mystery Screw

The screw appears to have a knurled OD on the head. That makes me
think it was intended for use to clamp a dial like the cross feed?

allan

On Sat, Jan 23, 2021 at 4:22 PM Dave Eggebraaten (AF5IA)
<eggebraa10@...> wrote:

Since you have a threaded hole... This would be a good place to mount one end of a Y scale for a dro. The other end of the scale can mount to the 2 screws that hold the taper attachment to the saddle. It can be done with out making and "new" holes.

On 1/23/2021 8:02 AM, trackthatpot2000 wrote:

Can anyone tell me what this screw is for on my SB13 ?





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






Re: Mystery Screw

m. allan noah
 

The screw appears to have a knurled OD on the head. That makes me
think it was intended for use to clamp a dial like the cross feed?

allan

On Sat, Jan 23, 2021 at 4:22 PM Dave Eggebraaten (AF5IA)
<eggebraa10@gmail.com> wrote:

Since you have a threaded hole... This would be a good place to mount one end of a Y scale for a dro. The other end of the scale can mount to the 2 screws that hold the taper attachment to the saddle. It can be done with out making and "new" holes.

On 1/23/2021 8:02 AM, trackthatpot2000 wrote:

Can anyone tell me what this screw is for on my SB13 ?



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


Re: Mystery Screw

Dave Eggebraaten (AF5IA)
 

Since you have a threaded hole...  This would be a good place to mount one end of a Y scale for a dro.  The other end of the scale can mount to the 2 screws that hold the taper attachment to the saddle.   It can be done with out making and "new" holes.

On 1/23/2021 8:02 AM, trackthatpot2000 wrote:
Can anyone tell me what this screw is for on my SB13   ?


Re: Mystery Screw

David Flower
 

Maybe it was used previously to mount a DRO scale....is there a second mystery screw somewhere close by?


Re: Mystery Screw

Andrei
 

Does not look like the screw is original to the lathe. There should be no screw there. Maybe a prior owner added a feature? 


Re: Mystery Screw

Rick
 

I agree, not original.  Here is a factory cover.  If I was making a replacement, I would make probably make it out of 1/8" aluminum. Notice the ends are turned up slightly on the sheet metal cover to glide smoothly.


.


Re: Internal threading woes

John Jenkins <gridguardian@...>
 

You have a right to be proud of this. Great recognizing the need and some fine work producing a 1st class repair!


Re: Mystery Screw

trackthatpot2000
 

As I have not seen this on any of the images of the taper assembly on the web..I guess a previous owner did this mod to hold a bracket for dial gauge or something like that.


Re: Mystery Screw

Steven H
 



Item 36 ‘chip guard’ on the diagram and parts list. SB part number CL3285T for the 13” lathe. But I don’t see the screw in the diagram so maybe something a previous owner added.

Steve Haskell

On Jan 23, 2021, at 10:45 AM, Steven H via groups.io <stevesmachining@...> wrote:

Cover is missing on my 16” lathe also. Going to make a cover someday.

Steve Haskell

On Jan 23, 2021, at 10:43 AM, Steven H via groups.io <stevesmachining@...> wrote:

You are missing a sheet metal cover that covers that machined surface and slot for the taper attachment. Presumably the screw retains the cover.

Steve Haskell

On Jan 23, 2021, at 9:02 AM, trackthatpot2000 <timmsken@...> wrote:

Can anyone tell me what this screw is for on my SB13   ?

<B41D5741-4F8B-4B5F-9B86-A78D1C52DA3B.jpeg>
<E734DD1B-BE2C-40A8-8B18-A8C9680D09F6.jpeg>


Re: Mystery Screw

trackthatpot2000
 
Edited

If the screw held the cover , then the cross slide wouldn’t work...as the cover slides back and forward pivoted on the main locking screw.


Re: Mystery Screw

Steven H
 

Cover is missing on my 16” lathe also. Going to make a cover someday.

Steve Haskell

On Jan 23, 2021, at 10:43 AM, Steven H via groups.io <stevesmachining@...> wrote:

You are missing a sheet metal cover that covers that machined surface and slot for the taper attachment. Presumably the screw retains the cover.

Steve Haskell

On Jan 23, 2021, at 9:02 AM, trackthatpot2000 <timmsken@...> wrote:

Can anyone tell me what this screw is for on my SB13   ?

<B41D5741-4F8B-4B5F-9B86-A78D1C52DA3B.jpeg>
<E734DD1B-BE2C-40A8-8B18-A8C9680D09F6.jpeg>


Re: Mystery Screw

Steven H
 

You are missing a sheet metal cover that covers that machined surface and slot for the taper attachment. Presumably the screw retains the cover.

Steve Haskell

On Jan 23, 2021, at 9:02 AM, trackthatpot2000 <timmsken@...> wrote:

Can anyone tell me what this screw is for on my SB13   ?

<B41D5741-4F8B-4B5F-9B86-A78D1C52DA3B.jpeg>
<E734DD1B-BE2C-40A8-8B18-A8C9680D09F6.jpeg>


Mystery Screw

trackthatpot2000
 

Can anyone tell me what this screw is for on my SB13   ?


Re: Internal threading woes

trackthatpot2000
 

And this is the repair kit fitted ....It should now outlive the rest of the machine :)


Re: Internal threading woes

trackthatpot2000
 

This is what the original design looks like it’s just extruded aluminium, the lug on the left is the one that is stripped...the manufacturer has now fitted a steel thread insert as per the one on the right...but this is still not ideal as steel on steel in a leadscrew is a no no.


Re: Internal threading woes

mike allen
 

        looks sharp !

        animal

On 1/22/2021 4:32 AM, trackthatpot2000 wrote:
Here is a pic of the completed job ..I have made about 40 of these so far and sold 4 already this month.

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