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I just got a Monoprice Maker Select v2 off eBay for $200 and I'm very happy with it (so far). I'm learning a lot, but I've run into this problem that I cannot solve:

When I put filament into the extruder (it's a direct drive extruder), it works well for a minute or two and then the extruder pushes it back out the entrance hole where it should be inserted.

I have no idea why it's doing this. The weird thing is when it's being pushed back out it curls up, maybe from being pushed back up and being hot? It is unclear to me why it curls.

What I have tried:

  • Multiple brands of filament but nothing is working (I'm not sure what type of nozzle is on the Maker Select v2 but I have printed a Benchy once before this with no problems);
  • Unclogging - I took the cold end off and nothing looks jammed in it;
  • Pushed a guitar string through the hot end and no jams.

I cannot figure out why it's doing this.

1 Answer 1

Change the retraction distance, maybe you have a too long distance, that pushes the filament the whole way out.