Posting for those that were interested DIY Welding positioner finished .
I think I posted on this last year pre modifications and had some good feedback.
Ive actually had enough of tinkering with it so I'm calling it finished, theres a control box fitted 24v power supply, ive run 4 core screened cable from the controller to stepper motor, I also added thick Delrin washers both sides of the face plate t help protect the slewing bearing from any arcing.
A couple of tweaks in mind are upgrading to a slightly larger pinion gear, as is its uselessly slow bottom end, so I can bring that up and gain a few more rpm at the top speed.
I might swap out the controller for one ive found that has room for expansion and inputs,
As things are there was no way to plumb in a foot pedal that I could see.