It would be great to be able to turn on the built-in air filter when printing PLA but I can’t seem to do this when the vents are in the “cooling mode”.
Has anyone figured out how to get the filter working when printing PLA?
You will likely need to use an air filter external to the machine
Yea that would be great since PLA can also emmid harmful substances.
Currently, the only viable solution is to employ an external filter—such as the Smoke Purifier—or an equivalent standalone filtration system.
I posted this earlier, but here it is again:
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I’m on the same wavelength as you @KYZ_Design , I’d also like to know if the H2D filter is similar to the other Bambu filters? I’ve been looking at the Voxel X-Filter and the Bento Box from them and they don’t list H2D compatibility yet. I’m assuming they haven’t gotten their hands on one to test it yet though.
I wonder if editing, say, an ABS profile to PLA temperatures, and setting a low chamber temp, will trick it to using the exhaust fan on filter mode using the existing filter.
I’m not doing this yet because I get the feeling that I’ll go through the work and then Bambu will just enable a tick box to enable air filter in the firmware (I mean, it just has to slide the little gate up…)
As I mentioned elsewhere, there is an option in Orca for “enable air filtration” or something along those lines, Bambu studio needs to expose that setting. Also you should be able to turn on mode 3 via g-code.
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Bambu Lab Studio provides this option both in the printer and filament settings, but as far as I know, the bypass is hard-coded.
So, Orca is not always the answer to every problem.
All I was saying is bambu needs to expose the option to the user in filament profiles for us to choose when to turn on mode 3 filtration.
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For me, the current options are sufficient when combined with external filtration.
However, you may want to submit a ticket and explain why this would be a valuable improvement.
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Please note that if an external filtration option is used, like the Smoke Purifier, the chamber temperature can raise high enough that it can lead to clogs due to heat creep (in the extruder or the hotend).
Our team is investigating the idea of using the included filter for PLA, but if it will be implemented, the exhaust fan will probably need to be used at the highest speed to prevent such heat creep issue.
We are still testing to ensure it is a viable solution.
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If the Smoke Purifier’s airflow—after accounting for filter, hose, and other resistance—is greater than that of the chamber exhaust fan, it should still operate without any risk of overheating. Or is there another factor at play?
Please keep us updated on your test results.
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Does the H2D Exhaust fan have higher static pressure and flow than the Bambu Smoke Purifier running at its maximum setting? The Bambu Smoke Purifier’s airflow is very strong, almost like a vacuum.
I don’t understand how it will cause the printing chamber to get hotter for PLA/PETG printing.