A Carriage Stop for the Atlas Lathe

[TomG]

(06-22-2012, 09:07 AM)DanH Wrote: Tom,

Can you describe how to do the thimble hash marks?

Dan

Sure Dan.

The lines were cut on my vertical mill, using the quill as a sort of shaper or slotter, sort of like I did in my Steven's Favorite build thread over in the Gunsmithing section.

Grind a threading tool except make the angle 30º instead of 60º and leave the point sharp. Mount the tool sideways in a boring bar, put the boring bar in the spindle of the mill and lock the spindle. Put the thimble in a dividing head, indexing head or mount it on a rotary table to space the divisions. Set the depth stop for the different length lines and go to town. I probably did the long ones first, re-set the depth stop and filled in the rest. Be sure to use some cutting oil on the tool to keep from snapping off the sharp point.

Tom