Printer Brand: Printrbot Printer: Printrbot Plus Rafts: No Supports: No Resolution: 4 mm. Infill: 100% Notes: Print in a semi-flexible plastic like polypropylene. 210 deg. extruder, cold bed, use clear packing tape on the bed to keep the part secured, enable cooling, print fairly slowly (30 m./sec.), 100% infill, no support, no brim, raft, etc.