Hictop 3DP-17 z-rod top spacer for auto levelling z by g-code

Very simple spacers (also makes a handy quick test print) to put over the z rods so that you can auto level the z plane by raising the z-axis to the top and 'bumping' into the top. Be very careful to ensure that your z-axis will travel all the way to the top without fouling, hitting or chopping anything. The effect of going slightly beyond the printer z maximum causes the steppers to skip but it leaves the z plane as level as the top of your printer. So also check that the top of your printer is