Single Point Threading on a PM-1030V?

[erikmannie]

Here is the insert centered with the MT2 slim-line live center:

 

[erikmannie]

Here is my groove and clearance. I plunged .060". The groove was just barely wide enough for my reflexes and the location of the chuck jaws.

 

[Aukai]

Yikes is right....

 

[erikmannie]

Here is my whole setup with the tool near the headstock:

 

[erikmannie]

Here is the setup with the tool at the tailstock end:

 

[erikmannie]

Here is the mistake. I can't hit the threading dial accurately every time with this higher RPM.

 

[erikmannie]

Fishtail check:

 

[erikmannie]

Here is the carbide cutting about .003"-.005" with no cutting fluid. Worked smoothly for light cuts.

 

[erikmannie]

Here is the Shars screw thread micrometer measuring the bolt that I bought at the hardware store. The forum software rotated the picture. I had definitely looked up the major and min/max pitch diameters and written them down. This is just a sanity check (which I compared to what I was cutting in the lathe):

 

[erikmannie]

Here is the double (spoiled) thread that I tried to salvage. I turned it down to .2500" and I will make a 1/4-20 out of it: