IMPORTANT: Z axis must be mesured from the “20mm” indication to the top. NOT from ground to top. 

A resin compatible calibration cube that will make it easy to tell where your machine should be tuned to obtain the best results. 

The main section is a 20mm cube which must be mesured after printed to tell which axis needs tunning. 

It has a 2mm buffer section to avoid elephant foot in Resin 3D printing and to avoid 1st layer effects as well.