The Smart Spool Holder (with filament tangle & runout sensor)
thingiverse
The filament runout sensor is a very popular accessory. Unfortunately, in most cases, it's absolutely useless! The filament is generally hooked to the spool, and its end will never go through the sensor. This can be compared to a tangle... The Smart Spool Holder and its accessories will really detect the end of the filament (free or hooked to the spool), and filament tangles. It will also make filament loading/unloading easier, and adds an adjustable X endstop. Here's a very simple and obvious solution to a complex problem that inspired many overengineered designs. However, reinventing the wheel is my favorite hobby, so this concept may already exist. But Google didn't bring it to me... You will need: 1x screw M8x45 1x washer M8 1x screw M6x30 (cap screw) 1x screw M6x25 (countersunk screw) 1x nut M8 (Nylock nut) 2x nut M6 (Nylock nut) 4x screw M3x6 4x screw M3x12 4x washer M3 1x screw M5x6 1x hammer nut M5 210mm Teflon tubing 1200mm 2 wire cable, Dupont female ended Drill bits: 2mm and 4mm 2x KW12-3 microswitch
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