Ender 3 Bed Level Test

thingiverse

Another take on bed leveling test. This is a 200x200mm shape. Some straight lines, some arcs and cirlces in couple of places. Bed adhesion sometimes depends on print head movement, hence both lines and arcs. Especially PET-G sticks to bed differently on lines and arcs if Z offset is not correct. I find it particularly useful when adjusting the Z offset for UBL. You can get a perfect bed adhesion on glass bed without tape or glue. You might want to adjust model height in your slicer to accomodate first layer height.