Filament Jam Sensor

thingiverse

A simple mechanical filament jam sensor triggers automatically if the filament becomes stuck on the roll or under too much tension due to other reasons. I pair this sensor with OctoPrint to pause prints when the issue occurs. To build this sensor, you will need a suitable end switch; I used a ZIPPY VMN model, which has a specific mounting hole: http://www.zippy.com.tw/sw/show_detail.aspx?ps_rfnbr=314. You can drill matching holes for your type of sensor or modify the design to fit your chosen switch. With OnShape, you can duplicate this document: https://cad.onshape.com/documents/e07d739b67e082153adead97/w/207444e8c57531d54523d7aa/e/35ca79546d6725c7444fc339. Print Settings: Printer: Anet A8 Rafts: No Supports: Yes Resolution: 0.2 Infill: 15% Notes: Print sideways, with supports only needed for the filament guide and its attachment. If you want to clip the filament in and out, cut a slot in the ring using sharp snips, slightly smaller than the filament diameter and at a slight angle so it doesn't fall out.