I need to push my object a tiny bit down, so part of the object is below the bed and is not printed.
Luban keeps autofix and sets my object back up onto the bed.
How do i stop it from autocorrecting?
Which version of Luban do you have?
Luban is intended to be a “noob friendly” slicer, so it has a lot of guard rails.
I can’t push objects below the print bed in Luban, but I can do it in Cura. If you don’t want to switch slicers, you could also open the object in an editor, and remove the bits you don’t want. I’ve used tinkercad.com to quickly slice pieces off using a negative cube. There are plenty of other editors mentioned in the forums if you don’t want to use tinkercad.