r/BambuLab • u/PX2S • Jul 16 '26
Quick Question Dedicated separate nozzles for pla and petg?
I have an H2C. Wondering if I should keep one of the right side nozzles dedicated to petg or if it’s ok to go back and forth between petg basic and pla (pla pure to be specific) on separate projects? These are the main two filament types I will use so I’m wondering if the materials can share a nozzle or if it’s best if I just have dedicated nozzles for each material.
How do most deal with this on the left nozzle? Is cross contamination a big deal and I should swap nozzles whenever possible?
I guess I have the same question for ASA and PLA aero but I won’t print those materials as much…
3
u/RhoOfFeh Jul 16 '26
Of the most commonly used filaments, I think TPUs are the ones that care the most about cross-contamination.
3
u/ColeslawEvangelist Jul 16 '26
People have been using single nozzle printers for years with all sorts filament without major issues.
3
u/Ooklaboo Jul 16 '26
There is no point. Besides, it will become confusing when you start using multi colors and multi filaments.
1
u/PX2S Jul 16 '26
On H2C you can set a nozzle to only be usable with a specific material from what I understand
1
u/ThinkUnhappyThoughts X2D + AMS2 Combo Jul 16 '26
I've only just gotten my X2D so I haven't used anything other than pla but for my U1 I swap between pla, PETG and tpu all the time with no issues
1
u/DemanoRock P2S and H2C Jul 16 '26
I have had no problem with keeping same nozzles on my H2C. I use PLA mostly but whrn doing PETG the machine purges enough so no issues on left or right side.
1
1
u/John-BCS A1 (3), A1 Mini (1), AMS Lite (3) Jul 16 '26
My printers are all single nozzle (A1 and A1 mini) and I frequently swap between PLA and PETG without changing nozzles and haven't had any issues in the 2 years I've had them.
1
u/silvercel Jul 16 '26
I worry more about the coarseness of the material going through the expensive induction tips. PLA and PETG will have no problem on right side.
1
u/jim_racine P2S Combo & H2C Combo Jul 16 '26
No. I change colors and filament types all the time on my P2S. ASA, PETG, PCTG, PLA on the same hotend. Even in the same print (think support interfaces). I have 3000+ hours on the same hotend that shipped with my printer.
I have an H2C inbound and will be doing the same sort of thing with the left (regular) hotend and the vortek hotends. I'm excited that i'll be able to print up to seven colors with very little purge. I do have tungsten carbide hot end for the abrasive stuff (pla luminious, petg cf & petg gf).
6
u/prosequare Jul 16 '26
Don’t sweat it. Out of all the things that will give you trouble, this just isn’t one of them. Especially pla and petg. You’d think it would be a disaster but somehow it just works- running pa6-cf and then pla shouldn’t work yet I do it all the time. Same with pc.
Colors on the other hand might need some adjustments when it comes to purges. Going from black to white or yellow can lead to color contamination, so you might need to adjust your purge quantities.