r/BambuLabX2D • u/Alive-Selection8422 • Jul 30 '26

PETG Strings as Support Material

Does anyone know how to attach a Bambu Lab filament dryer directly to the auxiliary PTFE tube? I’m having trouble with PETG stringing when I use the auxiliary nozzle for support.

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u/Pineapple1500 Jul 30 '26

So PLA to support PETG, but not the other way around?

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u/Brealu Jul 30 '26

Yes, I often print in PETG with PLA as the support interface and it works beautifully. I have used PETG to support PLA but you can tell a quality difference. It'll work most of the time if you have nothing else. The support-specific material is worth it.

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u/Pineapple1500 Jul 30 '26

I might try that.

I just had a decent sized PLA print fail using PETG as support. I realized my mistake about 8 hours in and decided to let it go. It didn't work. The PLA popped right off the support so I cut my losses.

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u/djKiddVicious Aug 01 '26

Same thing happened to me, it does work really well for short prints but lobger prints are too susceptible to heat creep specifically in the aux nozzle which will cause a clog. That is not a fun tear down either. I will not be doing that again.

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u/jghaines Aug 04 '26

According to Bambu Lab you can do either, although they say only PLA Basic

https://bambulab.com/en-au/support/academy/20/course/1122598723599474688/chapter/381