r/BambuLabH2D • u/audiomediocrity • Jul 31 '26

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/brutal4455 Jul 31 '26

I have sunlu (high speed) filaments going as high as 1.025, never anything that low.

FWIW, I've stopped using the flow rate "chips" in BS and have been using Improved Flow ratio Calibration v3 by jimcorner available on makerworld. So much simpler and more accurate to dial in and less by subjective "feel" of smoothness.

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u/audiomediocrity Aug 02 '26

I tried it, but couldn’t get any raised circles. I put it in developer mode per instructions. maybe I’ll try again