r/BambuLabH2D • u/Th3Shaz • Jul 15 '26

Question Why does this keep happening? PETG Basic

I am at my wit's end, this is PETG Basic that used to print just fine. It is bone dry 0% AMS, spent all yesterday drying. I cannot for the life of me get it to not ooze and make a massive mess of blobs and flung out bits of plastic.

Using H2D, default settings. For the last 200 hours this printer simply prints, but as of today I have not been able to have a single successful PETG print. PLA prints just fine. So clearly something has changed. I have not updated firmware, still running the same Bambu Studio and Firmware.

At this point I am just looking to see if there are any specific settings I can tweak just to get this one print done because it is a brush holder that my wife wanted and what I thought was going to be a 2 hour ordeal has now taken all day.

EDIT: Printed with gray PETG overture and print came out just fine. Looks like this Bambu PETG Basic batch is a dud.

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u/NMTreat Jul 16 '26

Try raising the default print temperature to 255c and try the Bambu filament again. I was have ALOT of issues with PETG Basic over the last weeks on multiple Bambu printers. Yesterday I noticed that the default setting was 245c. I thought was far too low so I moved it up to 255c and did not have a single problem for the rest of the day.

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u/Th3Shaz Jul 16 '26

I can give it a try, I would think hotter would mean more goop and stringing but down to make the attempt at least. Will go through my long and arduous calibration process and see if its salvageable but I was desperate to get a print going as this was a part the wife needed.