Author Topic: Another interesting lathe attachment  (Read 2932 times)

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Another interesting lathe attachment
« on: June 20, 2022, 07:03:05 PM »
Something I think I'd use far more often.....spindle back stop

http://mikesworkshop.weebly.com/chuck-back-stop-and-disc-alignment-tool.html
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Offline Dave Otto

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Re: Another interesting lathe attachment
« Reply #1 on: June 21, 2022, 12:22:29 AM »
I made one years ago, not as fancy but it does work within limits. The left hand bushing is a slip fit in the spindle bore. The right end has a shoulder that bottoms on the end of the spindle and the small tapered piece causes the split mandrel to expand when tightened.

Dave

Offline crueby

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Re: Another interesting lathe attachment
« Reply #2 on: June 21, 2022, 12:33:47 AM »
Does that work sort of like chuck 'spiders', but is adjustable as well where spiders are fixed thickness?

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Re: Another interesting lathe attachment
« Reply #3 on: June 21, 2022, 01:01:43 AM »
Does that work sort of like chuck 'spiders', but is adjustable as well where spiders are fixed thickness?

Yes   and ostensibly, you can fit the end with what ever fitted stop you need for the job at hand.....

Dave
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Offline Thor

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Re: Another interesting lathe attachment
« Reply #4 on: June 21, 2022, 07:23:42 AM »
 A handy tool to have, I made one for my small lathe many years ago and it is used frequently.

Thor

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Re: Another interesting lathe attachment
« Reply #5 on: August 21, 2022, 09:46:52 PM »
Hey Thor,

Sorry to take so long to get to this I just saw it!!

I like that design a lot!   I just picked up a #3 morse taper blank too!

Dave
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Re: Another interesting lathe attachment
« Reply #6 on: August 25, 2022, 03:12:26 AM »
I ordered material for the back stop today Thor!    Waiting for the weather to get bad, and I'll jump on it!

Dave
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Offline Thor

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Re: Another interesting lathe attachment
« Reply #7 on: August 25, 2022, 06:29:39 AM »
Hi Dave,

 Good luck with your back stop project.

Thor

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Re: Another interesting lathe attachment
« Reply #8 on: August 25, 2022, 02:07:20 PM »
Thanks Thor,,   I was thinking about this change.....what are your thoughts?

It would amount to a standardized shank on the stop itself which would let me make much smaller diameter stops....It's just an inversion of the current design.

there will be other changes to suite the SB9. but I'll post them when I get to the project.

Dave
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Offline Thor

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Re: Another interesting lathe attachment
« Reply #9 on: August 26, 2022, 07:37:04 AM »
Hi Dave,

 Looks good to me, why didn't I think of that? :embarassed:

Thor

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Re: Another interesting lathe attachment
« Reply #10 on: September 22, 2022, 01:57:09 AM »
OK   couldn't put this down as I have the coof, and I needed something to do...

Here it is all South Bend-erized....   I still need to figure out draw tube length....

I made this to match the Emco design but with imperial material....Samantha is that kinda lady..

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Re: Another interesting lathe attachment
« Reply #11 on: September 22, 2022, 02:05:00 AM »
For the actual stops, I have a 1/4-28 thread with a 60 degree socket.   That should repeat well enough, and I can take a skim cut before use I suspect.    I have a rage of back stops from 1/4 inch to 2 in

Should be a good start!

Dave
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Re: Another interesting lathe attachment
« Reply #12 on: September 23, 2022, 04:38:01 AM »
There   Ready to build....
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Offline Thor

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Re: Another interesting lathe attachment
« Reply #13 on: September 23, 2022, 06:20:39 AM »
Hi Dave,

 Your backstop looks good, and good luck with the machining process.

Thor

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Re: Another interesting lathe attachment
« Reply #14 on: September 23, 2022, 12:46:56 PM »
I can see a need for a spider plate to reach around the 3 jaw....but it's an adaptable design..

Dave
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