PLA The eggs print at their original size at 0.15 mm layer height without supports or infill. Just make sure to have enough perimeters to avoid holes in sloping sections. Three perimeters are enough for a 0.45 mm line width. If using PrusaSlicer, uncheck the “Ensure vertical shell thickness” option (visible in Advanced Mode under Print Settings > Quality) to avoid spurious infill that affects overhanging surface quality. The big version shown is printed at 150% its original size at 0.2 mm layer height.