Vevor Mini lathe

[Det2]

Well here's the question,
I have a small Vevor lathe. My issue is that I would like to use the auto feed for cutting some threads. Considering the MASSIVE power of this tool. I need to make multiple passes. Keeping it all in sync for second pass after stopping EXACTLY here is an issue.
I have tried to make something that would trigger the half nut but it is far less than accurate.
I'm thinking that there is a forward/off/reverse electrical switch that stops the whole lathe and reverses it. I SHOULD be able to hijack that signal and use an external switch mounted on the bed/carriage to either stop and or reverse everything so I keep everything in sync for a second pass.
Anyone got any experience with this? Or any thoughts as to why this won't work?
Thanks in advance.

b

 

[willf650]

I would doubt it would work as even if you stop it, it will continue to spin with no power so I don’t see how you would sync it.

Does this lathe not have a thread dial indicator? If not see if you can add it. Without it I don’t see how you’re cutting threads.

I don’t have a ton of experience but the indicator is how you’re supposed to sync the lead screw and engage it for subsequent passes. You’re not supposed to reverse rotation as the tooling will only cut in one direction.

 

[JuncleJohn]

The thread dial should keep your threading tool in sink with your previous passes. If threading up to a shoulder you can undercut a relief which will allow you time to stop before hitting the shoulder.

What you are proposing to do isn’t even a normal operation on a cnc lathe.

John

 

[Sumboodie]

What size lathe?
I have a mini lathe, 13x40.