I am currently rebuilding my old Anycubic i3 Mega printer to use a direct drive extruder, so I wanted to turn the filament runout sensor into a reverse bowden setup. This one uses an old model from Thingiverse which I have used on other 3d printers before. Sadly, it has since been deleted, so I am going to upload it alongside the holder here.

You are going to need:

• 2x M3x20mm screws
• 2x M3 nuts
• 2x PC4-M6 Couplers
• 1x Cable Binder

You will need to snip off the magnetic holder from the original runout sensor so that it will fit inside. I managed to do that with a side cutter and some force. You can also reuse the screws that held the original extruder for the holder. Use a cable binder to fix the cable loom so it doesnt flop all over.

You can print it lying flat on one side with minimal supports for the cable loom holder.