1127 solid tool post mount

After looking at your first pic, I was wondering where you mounted the x-axis scale for the DRO. Are you using magnetic scales?
 
A washer. I really should have thought of that. :) How would one turn it for thickness though? Of course, the ones I have might just be the right thickness to start with. :)

Face it, drill it, part it. The part should be accurate enough for a washer. If not, put it in the chuck and face it.
 
After looking at your first pic, I was wondering where you mounted the x-axis scale for the DRO. Are you using magnetic scales?

It's a glass scale. I like the idea of the mag scales, but not the price.

It's hanging off the back of the carriage. You can see one of the support bars in the second pic. I can take some more pics of it, but it's based on the idea from this video.
I had considered doing that, but kept waffling about it. The video convinced me to try it and I've been happy with the results. I've tested it against micrometer measurements and it's very accurate.
 
Face it, drill it, part it. The part should be accurate enough for a washer. If not, put it in the chuck and face it.

Wow.. I'm good at overcomplicating things. :) I was thinking of trying to chuck up a pre-made washer and face it down. Your way is probably easier and I can make whatever diameter I want.
 
The washer does not need to be super thin. Just make it .1" + oversize. Turn and bore a shaft to the OD/ID and part off to size. You can calculate the needed thickness by the pitch of the thread. Divide the pitch length by 360 and then times by the approximate angle needed to clock the nut to the correct position.
 
That block looks too tall. Seems like larger diameter pieces will interfere with it on partoffs and groove cutting. My block is substantially shorter than that and I still had to cut a corner off for chuck clearance.
 
The height matches the compound, width is close. It is a possibility that it might end up causing issues though. It's something I'll have to watch for.
 
The height matches the compound, width is close. It is a possibility that it might end up causing issues though. It's something I'll have to watch for.
I think I made mine slightly shorter (2.25”) than the compound. I had a couple of tools that were almost on center when the holder was bottomed out and wanted a little extra room for adjustment.
 

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I think I made mine slightly shorter (2.25”) than the compound. I had a couple of tools that were almost on center when the holder was bottomed out and wanted a little extra room for adjustment.

I have a couple of 1/2" tools that are a bit close that way. I went this way figuring it's a lot easier to cut more off than to put the chips back. :)

There are a number of considerations that I didn't consider until I started test fitting this thing. It's been a very interesting project and I learned a few new things about my lathe.

Thanks for posting your drawing! I got a number of dimensions from it to help line things up.
 
Got the handle clocked properly. The formula above to calculate the thickness came in handy.

Parting is MUCH improved! I was using aluminum and found that I got excellent results just using the power feed. Nice finish as well.
 
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