Back_Leadscrew_Bracket

This is a bracket for a lead screw at the back of the Core_XY printer.
First I have to apologize: I am certain that I published an earlier version but can't find it.

This version is a lot simpler, although it also has a little room for adjustment in the Y-direction, for when your configuration is not quite vertical. For sideways adjustment one should use the motor mount.

There is one serious problem with using 1 normal lead screw: the bed goes down when the power is off. I made a Z-axis brake (https://www.thingiverse.com/thing:4245241) but it had very limited use. Can't advise it.

Still, two versions: one for the usual lead screw nut and one for the POM-Nut_Tr84 which came with the motor/leadscrew combination from RobotDigg.com, type 17HS3001-400N84, I now use.
(https://robotdigg.com/product/245/Tr84-400,-500-or-600mm-Leadscrew-Threaded-Linear-Nema17)

It claimed to have a better quality lead screw than the usual, so I tried and like it, despite the price. I have no commercial interest with them, but I name it because it gave much better results than I ever had. And the bed stays where is after power off, despite the relatively heavy load of a 326x326x6mm etc bed.
Please inform us if you know something (preferably without motor) with similar quality, so we have room for experimenting on a higher level.

Anyway: this was the reason that I had another look at the earlier version and decided that is was way to difficult to print and these things are also easier to mount.

Edit (sep 9, 2022): added some text and, more important, corrected a serious error with the POM nut. The site is not exactly easy to navigate, so I added a link.