Just a quick, simple stand to set rolls of filament on. other designs I looked at, were either too big and bulky, or too big to print on my mini. Bought a shelf to stack rolls on, and didn't want them rolling off the shelf, or falling over. Haven't messed with scaling or anything, but scaling will change distance between the cutouts. Will work with a roll anywhere between 56m and 73mm wide. A1 mini will fit 4 on the bed at one time.