Stops extruding in middle of a print

Stops extruding in middle of a print

Your printer is not extruding anymore in the middle of a print? You must abort the print? This problem can be caused by several separate ones:

There are two common methods to fix this problem:

Cold Pull

A cold pull works best with slippery, soft materials – like Nylon filament.

Again, heat up your hotend to the working temperature of your Nylon or Polyamide filament, push it through the hotend as far as possible, ideally, until your previous material is cleaned out, which obviously is going to be somewhat hard if your nozzle is completely clogged. Then have the hotend cool down.
What we recommend is to set the hotend to 110, 120°C and just keep on pulling on the filament while the hotend is heating until the filament plops out in one piece. Then cut off the impure end of the filament, fully heat the hotend again and repeat the process until the pulled end of your filament comes out clean and you’ve restored good flow through the nozzle. Usually, two or three passes should be enough.

Tools needed:

Nylon Filament about 1m (about 3 feet)



50g | Cleaningfilament gegen verstopfte 3D Drucker Düsen.

  • 1,75mm
  • 2,85mm
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Es kann passieren das die Düse eines 3D Druckers verstopft. Mit dem Cleaningfilament auf Nylon basis lässt sich dieses Problem ganz einfach lösen. Dieses Filament basiert auf der gleichen hochwertigen Formulatur die in allen PrintaMent Filamenten zum Einsatz kommt.

Zusätzliche Information


1,75mm, 2,85mm

Needle or wire method

For this method, you need an acupuncture or hypodermic needle, so that you can try to remove the blockage. Obviously, you’ll need a needle or wire that is small enough to fit into your nozzle bore, typically 0.4 mm.
We don’t recommend using a drill bit instead, because they break more easily than solid needles and worst of all, can permanently damage the nozzle if you are not careful.
Preheat the nozzle to your regular printing temperature for each material and start poking with the needle. Be careful not to burn yourself. The goal is to break the blockage so that it slips through the nozzle. The next time you push filament through the blockage will slip through the nozzle together with the filament.
You might have to go through the cycle a few times and push through a bit of filament by hand to check if you have managed to break up the blockage sufficiently. If this method does not work for you try the cold pull method

Tools needed:

Needle or wire which is thinner than the diameter of your nozzle.
Nozzle 0.4 mm / needle 0.3 mm or 0.35 mm