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So I have a bambulab A1 and recently wanted to print something with TPU. The issue I have however is that the extrusion is just hella inconsistent. I get a coupel seconds of normal extrusion and then a couple seconds of pretty much none. The first layer was only half filled when I checked and I want to know if you guys have any suggestions.
I used the base preset for generic TPU.
This is the first layer I get after trying a couple different presets. Better than before but still horrible.
Is your filament dry? With TPU, it's the first time that I saw a drastic difference of print quality. I dry my TPU for 3 hours at 45°C each time before printing.
I dried it for 8 hours before printing
After that the next step is usually to do a test print where you increase temperatures until you're at the maximum range for the filament.
Basically you're searching for the sweet spot. Heat is a major variable because it also affects flow.
I tried 235-250° without much change. Even tried uping the flow rate to 1.2 in the preset.
This is the only attempt that did not just fail at like layer 10 or something. And it's still bad.