How about the PETG-HF?

[Rossero]

@huminlian

PETG-HF apart from standard PETG filament

Make sure to check out this topic as well:

Bamboozled by PETG-HF

Wow, just figured out the hard way that PETG-HF is apparently not everything I thought it was. I’ve ordered several rolls of it and was generally happier with it than regular PETG. It prints easier and it looks better. I didn’t consider the fact that the trade off for it printing fast means it has to melt easier. I knew it, I just didn’t consider all the implications of it. I have a lot of re-usable spools for PLA that I’ve made myself - out of PLA. Obviously I knew those wouldn’t work for…

Especially this one:

@TetrisPetris

Former injection molding engineer here - this is a dirty secret in the molding industry too: high flow variants of polymers is just marketing speak for shorter molecular chains. This enables them to melt at a lower temp to enable lower viscosity at a given process temp. Unfortunately, nearly every desirable performance attribute of thermoplastics is a function of hydrocarbon chain length, so this will reduce strength and toughness along with temperature resistance

I’m not sure if this applies to the filaments in the same way as it did for this user in the industry, but there is something going on. I use PetG for better heat resistance and slightly different mechanical properties compared to PLA. If PetG HF removes those improvements, I’ll just stick to PetG. I have never had any issues with it and I’m rarely impatiently printing big objects anyway. (I never printed PetG on a bambu printer though, but I can’t see how that might be a different experience).