3DPrinting

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Crappy filament? (lemmy.world)

submitted 5 days ago by idunnololz@lemmy.world to c/3dprinting@lemmy.world

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Not sure if anyone has seen this before but I bought two spools of PETG from Elegoo, one in white and one in black. Their regular PETG, not the rapid one.

Yesterday I printed with the white spool and it worked pretty well.

Today I tried to print with the black spool and the filament would not come out of the nozzle. I tried diagnosing the problem and ended up swapping nozzles, taking apart the nextruder and putting it back together. Then I tried printing again and again the filament would not come out. I swapped back to the white filament because at this point I've essentially ruled everything out except the filament and the white filament worked. I then tried the black again and it would not print. I cut off about 10cm of the filament and tried again and same issue. Finally I cut off about another 50cm and now it started to print.

I'm not sure if this has happened to anyone else or if anyone knows what the issue is. It's almost as if the filament refused to melt or had an much higher melting point vs the rest of the spool.

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[–] BradleyUffner@lemmy.world 7 points 5 days ago (1 children)

Sounds like it was just a small section of incorrectly mixed (possibly contaminated) filament at either the beginning or end of a production batch. When they start mixing the plastics there can be some irregularities in the flow of materials and you get a bit more of one thing and a bit less of another. That's normally cut away and discarded once everything is flowing correctly. Sometimes it's missed or they didn't cut enough.

I'd consider it a one off, or very rare incident, and not a general overall quality issue unless it starts happening regularly.

[–] idunnololz@lemmy.world 2 points 4 days ago

Yeah. The good news is after cutting off the problematic part of the spool, the rest of it has been printing very nicely and I'm already halfway done the spool.