Filament Runout - Clogged Nozzle

I am trying to run 5 printers with big prints. Sometimes I forget to look or overestimate the remaining filament. I am running 3 MOARStruders and a Mini 2 with HS+, plus a Qidi.

When I run out of filament and the printer continues for some time, sometimes the nozzle gets clogged.


  1. Does this happen to you?
  2. Does it sometimes clog your nozzle?
  3. How long does it take you to take apart the head and unclog it? Each one takes me over an hour.
  4. Would you like a plug and play filament sensor that pauses the printer? By plug and play, I mean you stick it into the USB port of the printer and run the filament through the sensor. If you run out of filament, the printer pauses. No wiring, no Octoprint, no recompiling Marlin, etc. It would work with any Marlin based printer.
  5. Would you be willing to pay for such a device? $25, $50, $100?
  1. Rarely
  2. Not yet
  3. I’ve never had to take the head apart. I use a nozzle cleaning filament and for the bad clogs, stop the cooling fan to use “heat creep” to soften any filament caught in that area of the tool head.
  4. Maybe
  5. Around $25. I already have OctoPrint.