Here we go again . . . MK4

[1nbcnc]

I use oneway bearing wrench to hold the ballscrew when tightening the nuts.

Also, my SYK bearing holders have nuts with setsrews, but the thread hole does not go all the way tru so you don't destroy the ballscrew threads.

This is my wrench:

https://www.amainhobbies.com/align-f...t00005/p213519

Thank you for your suggestion, I will give that a try as well.