T8 lead screw endcap with flag

thingiverse

Sometimes, it is difficult to know if autoleveling is actually compensating, because the Z movements are so small. I used to stick a piece of tape to my Z lead screw to see if the screw is turning, but since I have a 3D printer, I thought I would make something like a small flag on top of the lead screw. Use the longer flag if you have the space for the flag to turn. It makes the lead screw's movement easier to see.