Hello. i am having issues with the z-axis movement on my mini.
A while back i started a print and noted that the z-axis was all off kilter and shut down the machine immidiatly. After some more trouble shooting today i have sorted out that the fast homing command from the lowest position causes the electronic’s side z-axis motor to bind and the other runs freely.
what i have established so far:
*seems to only happen from the lower end of the z-axis when home is hit on the cura control
*1 and 10 +/1 increments seem to work fine and are repeatable at the lower point
*coupling was verified to be tight on both lead screws
*generally the lead screws seem consistant with the frame
*zmin limit switch serves no function on the blue black wire as i thought it was failed and causing the jam up
*is it possible to force the printer to not use the rapid return movements? perhaps that can rectify the issue
*does it sound consistant with alignment or oiling or binding issues?
- which of the brackets have some play to soak up the alignment problems?
*anything else sound fishy, or could potentially be causing binding issues? weak motor?
*can i connect the zmin to anything i pulled it from the header above the 6 limit switch headers but can’t recall what pins it was attached to nor anywhere on the manuali that it can be installed to.
anyway thanks for the advice, would be great to use this again as its been months of neglect now
it appears that oiling the heck out of the lead screw helped but its still working hard a few points along the way. My thoughts now are that the lead nut and screw might have galled up over time originally creating a rough spot. anyway will keep tabs on its operation but i did get it to function again which is a plus and it seems to be able to print.