No Glue Extruder / Stepper Visualizer (uses 6 mm x 3 mm magnet)
thingiverse
Prusa-style Extruder Visualizer - 7 blades with a solid round outer rim to minimize snagging on objects. This design accommodates a round 6 mm x 3 mm neodymium magnet via press fit, eliminating the need for superglue. Simply print the front face down and then press a cylindrical magnet into the back side. Although resembling a fan, the extruder spins slowly, producing minimal air movement. Cooling effects would be insignificant.
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