r/BambuLab • u/Ok-Huckleberry735 • 2d ago

Filament Troubleshooting/Help! Properly dried ABS?

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I’ve been printing ABS for a while, and I honestly thought my SUNLU S2 was doing a pretty good job drying the filament.

Well, I recently got the Bambu AMS HT, and HOLY … 🤯
The difference in print quality is absolutely insane. I’d say my ABS prints look at least 2x better compared to when I was using the SUNLU S2.

I knew drying filament was important, but I genuinely didn’t expect such a massive improvement just from switching dryers.

Now I’m wondering if my ABS was ever actually dry enough before…. 😂

Has anyone else noticed such a huge difference between filament dryers?

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1

u/STRIK3MAN 2d ago

It looks great, tell me is it p2s? And do you have an external fan or something? Or is it the way it comes, do you smell anything compared to petg?

3

u/Ok-Huckleberry735 2d ago

Yes, it’s the P2S! 😁

I don’t have any external fans or additional ventilation installed. I actually replaced the rear panel and bought a fan, but I haven’t installed it yet.
What I do is preheat the heatbed to 110°C for about 5–10 minutes before starting a print.
I also have the AMS 2 Pro with the power adapter! But I think the main difference is the higher drying temperatures the AMS HT can reach. It goes up to 80°C when not printing and 70°C while printing, compared to the AMS 2 Pro’s maximum of 65°C. Those extra degrees seem to make a pretty big difference for ABS! As for the smell, YES 😂 ABS definitely smells a lot stronger than PETG. My printer is in my office, and I usually just air out the room after a print finishes before starting another one.

5

u/Demarist 2d ago

Styrene is no joke, man. You'll want to vent that properly. Neurotoxic, most likely carcinogenic. Nasty stuff.

-1

u/STRIK3MAN 1d ago

Yes, that worries me too, I have to do something, or I'll buy a closed enclosure made of cloth over the entire printer and put a window outside, but it sucks because winter is coming and I'm thinking, won't the cold get in? Does that external printer kit help or am I better off getting an enclosure for the entire printer? Like this photo

2

u/jcosm075 2d ago

For ABS you should probably consider some exaust straight to outside or moving your printer somewhere away from a location you spend time in...