Comment on Trouble keeping a top-heavy TPE part on the bed

• ExtremeDullard@lemmy.sdf.org ⁨5⁩ ⁨days⁩ ago

  It’s not clogged: I fished out the mangled piece of TPU and printed something else with it straightaway - several times. Not sure why it starts clicking like that with that filament. Worse: it seems to do it almost always at the same point in that print.

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  • beeb@lemm.ee ⁨5⁩ ⁨days⁩ ago

    Did you losen the idler tension screws? TPE requires that the tension is very very light otherwise it tends to buckle around the gear before entering the nozzle tube.

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    • ExtremeDullard@lemmy.sdf.org ⁨4⁩ ⁨days⁩ ago

      You were right: after some trial and error, I backed off both idler tensioning screws 2 full turns and then the print went without a hitch. It looks cleaner too. And I don’t know if it’s related (now sure how it would be, but who knows…) the part didn’t warp. First time I get a complete straight TPU part.

      Thanks for the tip!

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    • ExtremeDullard@lemmy.sdf.org ⁨5⁩ ⁨days⁩ ago

      I wasn’t aware. I’ll look into this tomorrow. Thanks!

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  • Damage@feddit.it ⁨5⁩ ⁨days⁩ ago

    Usually that’s a partial clog, and it happens at the same point because it’s triggered by something, usually retractions. Is that an area with many smaller extrusions?

    I’m not familiar with the Prusa hotend, but make sure that your nozzle is screwed on completely and, if you have a detachable heartbreak, check that too.

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