Blast it, another failure? Have you ever wanted to punish your dice for bad behavior, but felt that dice cages weren't secure enough? I bring you the new SuperMax dice prison! It prints fully without supports in a few hours and has room for four unstacked d20 or nine d6.
If the size is off, increase the scale by 1000%. The true dimensions are 69x69x34 millimeters. At certain resolutions the grating on the gate gets wonky. If this happens, use the No Grating version instead.
UPDATE August 17th 2019: Just finished printing it at .2 mm resolution. The print came out great with no warping or overhang issues, no supports needed. The print took around three hours.