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r/BambuLab • … • u/hawk_havoc

Fighting for my life trying to print with TPU

I haven't touched Reddit in years but I'm SO lost and I've tried everything else barring AI 😭 Also please let me know if I tagged this wrong!

I have a Bambu Lab H2S and I'm trying to print something with TPU (95a). I've successfully used TPU with this exact file multiple times with the same type of TPU and same setup, but now I'm encountering problems. The machine will print the first maybe 30 layers just fine, then will begin to tell me the extrusion motor is overloaded. Problem is, it's extruding just fine. I'm watching it extrude without problems. It's flowing fine and it's making new layers when I tell it to continue. But like clockwork every few layers it will again tell me it's overloaded. I've done multiple cold pulls that have gone without a hitch. I've tried to see if maybe there's too much resistance on the spool, but anything I change with that has no effect. I'm genuinely so confused and frustrated and lost, does anyone know what's happening or what can prevent/help this?

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