this is my project for the modernization of the Z-axis drive using a belt drive (chain hoist)
at the construction stage, I read a lot of forums where people on various printers suffered from crooked screws for driving the table, and I thought why I had the same problems and decided to make it my own way, because the belt cannot be crooked - you pull it and it is like a string is even ...
but there are some nuances herehttps://www.youtube.com/watch?v=EcuzI9aCGro&ab_channel=StanislavIlchenko
here they are very clearly shown ...
when creating my project, I took into account this drawback and, according to the calculations, tried to get rid of it
during the assembly process you will be given screws and nuts M3, M4, M5
I used ABS plastic in my printer very much I regret it ... I do not know how to cook it and my parts cracked during installation !!!
I recommend using PETG !! it is conducted more worthy than the ABS