This is a infinity cube.

The original model is 12x12x12 cm.

You musn't change the size on the no support cube, becuse that will change the snap mechanism and it maybe wont fit. But you can change the size on the normal one and it will print just fine.

You can print the original, or you can print the one with no support.

The support on the original is necessary beacus of the overhangs.

The no support works with the snap mechanism. The tolerance between parts is 0.05 cm/0.5mm. IF your not shure if the part will fit you can test the TEST FIT file. If the part doesn't lock in place you can use some glue.