Quote Originally Posted by Jonathan View Post
I'm struggling to find anything based on those part numbers, but if I compare with TBI datasheets then it seems that higher lead screws actually have slightly stiffer ballnuts. Perhaps it's the larger diameter balls.

I still prefer 32mm for Z though, so I've just bought one from Aliexpress:

It was $132 plus $4 for the three extra nuts. I'll get back to you if when I've got the machine back together I'm not happy with the accuracy on X or Y. Thanks for the offer.
A lot of modern CNC mills like Haas have 10mm pitch screws so makes sense along with extra speed they offer.!

They are going nowhere so just let me know if change your mind. They will eventually end up on a Mill or router at some point.!