Minimal Refrigerator Magnets Infill-15% Infill pattern-Grid Material. PLA(ELegoo) Wall thickness-0.8mm Wall line count-4 Top and Bottom layer-4 Bottom thickness-0.8mm Supports: yes Made on Tinkercad Uses 1 magnet (8x3mm) (Amazon) and Cousin DIY Small Round 1 Inch Mirrors(Amazon)