Quote Originally Posted by xoneeleven View Post
The Chinese vendor sent me a reply to an email that I sent them telling them about the issue.
Their response was:
"Dear friend.
Please can you buy such a coupling to change it. The problem will be solved then. This coupling is cheap only about 3usd. Can you get it in USA local? If yes. We can refund you 10usd. Then you can buy it. If you can not get it local. We can ship you 1pcs. It will cost about 12days. Please check if ok for you.
Waiting for your confirmation. Thanks a lot.
Nice day."
___________

I am unsure about what coupling I can buy in a hardware store to fix the issue.
Does anyone else have any recommendations on where to get similar couplings?

Thanks...

Mark
They are talking about this type of coupling https://buildyourcnc.com/images/rigi...01-4%20200.JPG
As we have said - this uses the stepper motor bearings to fix the position - it is not the proper solution - the Z axis leadscrew needs to be in a fixed bearing at one end and a floating bearing at the other end.

A better compromise would be to have a collar on the top end of the leadscrew, but we would need better pictures of the leadscrew mounting arrangement to be able to advise you properly.

Best regards,

Rob