Yet another calibration cube that I tried to keep fast to print. Made in sketchup, it is 25x25x25mm. You may resize it when slicing it in case you need other round numbers for your calibration.It also makes a nice present for friends who are curious about 3D printing :DPrint one cube, measure each axis with the caliper and recalculate your steps per axis as follows:Iterate until you are happy :)