Gunsmiths Please help

[paperpuncher]

Because the mounting studs on the backing plate (120 degrees) interfere with the 90 degree spacing of the spider's dog screws.

One solution would be to make a spider like 'ridgeway' did with 3 mounting holes to fit in between the D1-4 studs and locking screws.

I like the upgrade on the dog screws also, I think I'll go 1/2 x 20 with some inserts to hold a 1.25" copper wire ring, I use a big 4 jaw now with an outboard spider. I think I can reduce the distance between the spiders 3" with this setup. (be able to do shorter bbls in the headstock)

 

[bptactical]

Inside thee be the answers for ye!
http://www.hobby-machinist.com/show...Plate-to-make-a-chamber-jig-out-of-4-quot-DOM

 

[ranch23]

Hey guys, I still think that a steady rest will work if we can find the right material to make rollers out of. I have tried several different materials. Some will mark, some won't roll. How about some thoughts here. I can post pictures of what I have done.