Problem threading 4.5 TPI on grizzley lathe

[neil52]

My Grizzly is a step down from yours. I have experienced the threading dial loosening off blues. Really cannot fathom how your threads could possibly shift on you when not disengaging on the return. I turned these threads on mine without a hiccup.

They cut fine while keeping engaged, just had problem cutting in regular mode disengaging then reengaging on the 1 ,it alternated thread each time

 

[BaronJ]

Hi Guys,

I thought I had uploaded two pictures, but it won't let me edit my post !
Here is the other pictures.

The material I used was salvaged from another project.