A filament runout sensor case.
For mechanical endstops.

• Needs:
  2 - M3x12 screwed directly into the plastic

• Works for me:
  PLA, 0.2mm layers, 0.4mm nozzle, 0.8mm perimeter, 10% infill, no support

• Notes:

  • Works better if your filament path is a straight line, the usual curve can cause a little friction. My copy works none-the less, but there's a noticeable difference between testing with a relatively straight section of filament, and actually using it with a spool located in close proximity behind my i3, and the curving filament path that implies.
    .
• 2018-04-21--19-15-06
  • Well that was weird. I couldn't find mine, so printed another...and the sensor didn't fit. Apparently the plug on the mesh of the endstopI have is offset to one side. Which is wrong. The strange part is that I have printed and used this stl before, so apparently I have an endstop around here somewhere that is also weird. The other 5 new endstops I tried to fit in it were clearly not going to fit though.
    In any case; removed old version. Added fixed version:
    filamentRunoutSensor-PRINTORIENTED.stl