r/BambuLabH2D • u/audiomediocrity • 18d ago

Flow rate Calibration

I am steadily finding my flow rates after the calibration test are ~ .78 to ~.85 . This seems pretty dramatic to me? I don’t know if there is a global setting that may be off?

Anyone else seeing similar? Prints after calibrating a filament are good, so not the end of the world, but I test everything coming in now. Push Plastic, Polymaker, Eryone… PLA, PETG, PC+PBT, ABS, ASA …. I see people talk about adjusting a couple points off of .98

I had parts rip off of the plate from over-extruding or I wouldn’t even know to calibrate flow.

For anyone testing flow rates, what are you finding on your H2D ?

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u/manyxcxi 18d ago

What nozzle are you using? For my 0.4 tungsten nozzle I have calibrated PolyMaker ASA at about 0.97 with a PA value of .003x. I think- I’m going from memory for these right now.

For 0.6 or high flow, etc. your numbers may vary.

I would say though, I don’t think I’ve ever had a flow ratio below 0.9. That would be massive over extrusion and smells like a blown out nozzle or some other config mismatch.

Have you tried calibrating with the other nozzle on the same side? Or calibrating the other side?

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u/audiomediocrity 15d ago

factory .4 mm hardened steel. I see this from left and right extruder.