$18 Printrbot Simple Metal Heatbed Upgrade 3D-model almost 2 years 1 Printrbot Simple Metal E3D Chimera/Cyclops Mount 3D-model almost 2 years 1 Simple Low-Poly Pencil Holder 3D-model almost 2 years 2 Printrbot Simple Metal extruder gantry (Designer's Placeholder) 3D-model almost 2 years 1 Printrbot Plus V2.1 X-axis Spreader 3D-model almost 2 years 1 PrintrBot Guide Washers 3D-model almost 2 years 1 Large and Small Spool Holder for Printrbot Metal 3D-model almost 2 years 1 Printrbot Plus v2.1 Filament Holder 3D-model almost 2 years 1 Printrbot PLUS V2 Top Stiffener Bracket for M8 hardware 3D-model almost 2 years 1 Plunderbuss Pete 3D-model almost 2 years 65 Leveling Locks for Printrbot LC 3D-model almost 2 years 1 Printrbot Simple Metal "Triple Windmill" Feedwheel 3D-model almost 4 years 7