Filament Sensor Spool mount

thingiverse

This project is still in development, but I've successfully adapted Peter Solomon's sensor design for this application. To assemble the device, simply snap the two halves together - no screws required. The Spool Control Arms attach directly to your filament spool holder, which is specifically designed for CR-10(s) and Creality printers. However, with a few modifications, this setup can be adapted to work with most printers that support filament out sensors. To get started, you'll need the following parts: two Spool Control Arms, one mount, and one Cap. Additionally, you'll require two small screws and 90mm of Bowden tube - 10mm for the sensor inlet guide hole and 80mm to secure the sensor case to the control arms. Leaving a 0mm gap allows the sensor case to "float" freely while keeping it attached to the spool. This setup ensures seamless filament flow without any drag or detachment concerns. I hope you find this information helpful, and please excuse the video - it's an early rendition made with v1. Since then, I've refined my design through multiple prints and improvements, eliminating bolts and nuts in favor of a sleeker snap-together case. If you choose to use the Bowden tube method, only two small screws are needed; any solid link between the arms will work as long as it keeps the case from touching the spool during retraction.