Printrbot Simple 40mm Fan Mount with 360 Degrees Duct

thingiverse

This 40mm fan holder features a duct wrapping around the extruder to blow on the filament and printed part from three slots at 120-degree intervals. It has successfully withstood 1.5 hours of printing without heat issues. The print required minor super glue repairs. Assembly necessitates 6 M3x20mm screws, a Printrbot Simple, an M3 HSS twist drill threaded bit, and an Allen wrench (2.5mm). Optional tools include a 3mm twist drill bit, rotary tool, and round needle file. The fan holder was printed at 0.2 mm layer height with three perimeter layers and 33% hexagonal infill, weighing roughly 15 grams. Drilling or reaming the mounting holes may be necessary based on print quality. Be cautious during this step to maintain stability. After cooling the extruder, slide the duct around it while raising the print head. Securely fasten the tray extension with two M3x20mm screws and center the extruder in the duct's middle for optimal performance.