Filament Runout Sensor (Ball bearing)

This runout sensor uses two ball bearings

3D printer parts and enhancements

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This runout sensor uses two ball bearings to ensure that there is no wear, it also allows the filament to be fed from both directions so that the printer can auto-eject it after the switch sees a runout condition.


3mm-ID, 8mm-OD, x 3mm thick
5mm-ID, 8mm-OD, x 2.5mm thick

Materials and methods

0.2mm layer height
10% infill
Print at 20mm/s



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Mini il 570xn.1343682359 2jz9The 3D printing Guy commented ago

Impressed by your design! Others will like it too.

Ab070ed6bd35e37649fec781889e92f4?default=blank&size=40stachas added this to the filament collection ago
Mini sp logo grain 400x390Stamos added this to the 3D printer parts collection ago
Mini img 20200221 094725Engineering Nonsense published this design ago