Filament runout sensor extender

When the filament finishes passing through the sensor, it can whip around. Sometimes it goes into the print head rail while the head is still moving, and this can jam the printer.

This extender holds the filament in place until after the printer pauses.

Important: When printing large parts, make sure the extender does not interfere with the print. Remove it if necessary during this print.

I made it for the Ender-3 V3 KE, but I believe other printer models may have the same problem.

You need one M10 PTFE connector and about 8 cm of PTFE tube. I attached it to the sensor output using 3M double-sided tape.