I just received my ball screws for my Z-axis from Aliexpress.

So in Frank’s sketch, the ballscrew should be reversed- is that correct? Nothing else is needed to tell the ali vendor besides the 46x8mm end (and a 14x8mm other end if you want to have the option of making the top end captive).

Frank’s sketch is what you want. If you order them for Golmart as-is, the nut will be opposite of that and you will have to flip them around.

actually I should correct myself the ballnut should be reversed

oh ok got it thanks!