Geoff's GT2 Timing Belt pulley - fully 3D printed

SummaryI needed a new GT2 Timing Belt pulley and couldn't be bothered waiting for them to arrive via snail mail. Printed with 80% Concentric Fill - the only assembly needed is to push a 3mm nut into the bottom slot (as plastic just isn't strong enough IMHO). You may want to drill out the center, depends on your 3D printer calibration setup. Included are 18T and 20T pulleys, each size with 5mm/6mm/7mm centers