Atlas Craftsman 12x36 lathe Dro install question

[Markbinwi]

I’m working on installing a Dro on my lathe. In the photos the green carriage is from the forum and the other is mine. I need to make attachments and I don’t have the 2 tapped holes in my carriage. I would like to add them in the normal location as factory. Can someone measure their carriage and post the layout here?

Thanks in advance, Mark

 

[Eddyde]

What brand and model of lathe is it? You might be able to find a schematic at:

VintageMachinery.org | Welcome

 

[Markbinwi]

100+views and 1reply, I must have not clear on my request. I’m looking for the location of the 2, 3/8-16 tapped holes on the far side of the carriage on an atlas/craftsman 10-12” lathe. If someone can help, the distance down from the top of the dovetail and the distance the holes are apart (to the centers).

Thanks for looking, Mark

 

[Grinderman]

3/8” down to center from the top of the dovetail, 3” center to center on the holes. This was on a 10F

 

[markinwi]

3/8” down to center from the top of the dovetail, 3” center to center on the holes. This was on a 10F

Thanks, grinderman. I’ll lay it out and see what it looks like. Mark.


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[Markbinwi]

Grinderman, just for a last check, does the photo look right?
Thanks Mark

 

[markba633csi]

Keep in mind there are two styles of 12" Atlas- early and late. I believe the carriages are different.
Which one do you have?
Also, if this is only for DRO then you could use a different size fastener (#10?) and different spacing- no real need to copy Atlas
You could use epoxy instead of drilling if it's just holding a reader head. Degrease the surface, glue on a bracket and mount to that

 

[Markbinwi]

Keep in mind there are two styles of 12" Atlas- early and late. I believe the carriages are different.
Which one do you have?
Also, if this is only for DRO then you could use a different size fastener (#10?) and different spacing- no real need to copy Atlas
You could use epoxy instead of drilling if it's just holding a reader head. Degrease the surface, glue on a bracket and mount to that

Mine is a 1974 vintage 101-28990. What kind of accessories would mount in the holes?
I was planning to make a substantial bar for mounting the cross slide scale mostly hanging out the back.
I’m printing a mock-up to see how it fits using the 2 holes. I do have the z scale mounted, everything else is still flexible.

 

[markba633csi]

Accessories would be a follower rest and possibly a taper attachment- both are pretty rare
I have a 101-28940 and it does have the holes- Give me a couple minutes I'll measure it

I measure 2" center to center and 0.40 inch down from the horizontal surface of the dovetail to bolt centerline
3/8"-16 threaded holes X2
The 0.40 measurement may actually be 0.375- the lighting wasn't the best. I'll take another measurement tomorrow-
see if I can be more precise
I'm certain about the 2" however

 

[Markbinwi]

Thanks, looking forward to it. A pic would be great too.