Filament Sensor with PTFE tube 1,75mm

thingiverse

I wanted a simple filament sensor but couldn't find one that suited my needs, so I decided to create my own using a MakerBot micro switch board and a length of PTFE tubing. This DIY Filament Sensor is designed to work seamlessly with the makerbot micro switch board and a piece of PTFE tube, guiding the filament through its path. To get started, simply hang it off the cable - that's what I did, and it gave me the flexibility I needed. Alternatively, you can mount it directly to your printer for added stability. Installing this sensor is a breeze. Just slide in a PTFE tube, trim the excess part that sticks out after printing, and then insert the micro switch board. The filament will glide smoothly through the sensor with minimal effort required. To secure the board, use two M3 screws (or any other size that fits) to mount it firmly in place. Depending on your print settings, you might need to drill a 3mm hole to accommodate the PTFE tube for a snug fit.