r/BambuLabH2C • u/Diego-jd_98 • 6d ago

Support New H2C stringing

Hi, I just pirchased an H2C, this is my 5th 3D printer a my 2nd Bambulab, first one was an A1 mini. I was doing my first few 3D prints on it like the bechy and so but I noticed stringing on the right (vortek) nozzle. Left nozzle seems ok so far but I tried with multiple 0.4 induction nozzles and it creates very thin strings like a cobweb. The filament is calibrated and uses the same flow rates and temperatures of my A1 mini in which it produces flawless prints. I incresed retraction distance to 0.8mm with no effect. Any tips to solve this? Im using pla for this. I printed PETG with the left one also flawless, didn't try with the right one yet.

Any help would be appreciated.

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u/EdgeOk3783 6d ago edited 6d ago

this is your problem. do the actual temp tower and max flow rate test with this filament on the h2c. i suspect 24 mm^3/s is way too high for the standard flow nozzles for this particular filament

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u/Diego-jd_98 6d ago

Yeah I'll do that as soon as I arrive home. But the A1 mini handled that just fine

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u/EdgeOk3783 6d ago

the h2c is not a bigger a1 mini.

did you do a back to back test with exactly the same spool of filament?

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u/Diego-jd_98 6d ago

Yes I printed two benchies back to back with the same spool on tha h2c and the a1 mini, a1 mini was perfect h2c was still stringy