Clausing-col. 13x36 Threading Problem

[MattM]

My first thought on reading your problem is that you may not be using the half nut lever when threading. I am making an assumption here and am just trying to help. On my clausing I only have 1 lead screw as I believe you do, Once the QC levers are set to the correct threads per inch, the half nut lever is used to power the carriage at the correct speed to cut threads which requires that the metal cutting gears in the carriage are in neutral. I use the back gears and the same number on the threading dial when cutting threads. If this is not the problem then I have missed the boat.

Have a good day

Ray

Thank you, Ray. Stupid me, I was not using the half-nut lever. When we returned from Santa Barbara I went out and used the correct lever. Success. No problem threading, in fact it is much easier than on my recently sold SB 11.

Now to complete the job I need to left-hand thread the other shaft, same diameter same tpi...

Thanks to all for the advice.