When using an external smoke purifier during 3D printing processes that require elevated chamber temperatures (such as printing with high-temperature filaments like ABS or PC), it’s crucial to be aware of its impact on the printer’s thermal environment.
Even when operating at its lowest speed setting, the smoke purifier can extract a significant amount of heated air from the chamber. This airflow may prevent the chamber from reaching or maintaining the desired temperature, such as 65°C, which is essential for certain materials. Consequently, the printer might display an error message indicating its inability to reach the target temperature, suggesting a potential malfunction.
To ensure optimal printing conditions and prevent such issues, it is recommended to disable the smoke purifier during high-temperature printing tasks. This will help maintain the necessary chamber temperature, ensuring print quality and reducing the risk of errors.
In summary, while the smoke purifier is effective in maintaining air quality, its use during high-temperature printing should be carefully managed to avoid compromising the thermal stability required for successful prints.
The rear vents are closed during high temp printing operations and it recirculates the air through the carbon/hepa filter. There’s no reason to even have the smoke purifier on anyway.
If you want a setup that will extract and scrub any air leakage out of the printer, you’re best bet is to put the whole printer in another enclosure and setup the smoke purifier to pull air from that. This way it doesn’t disturb your chamber temps at all.
This. There is a reason for the word “Smoke” in Smoke Purifier
I’m not familiar with BL’s, but modern appliances also count their running time to determine when the filters should be changed. Well, of course you don’t have to take this into account, but …
Well, it would still be pretty effective at scrubbing the printing air, it’s just that hooking it up directly to the printer is not the way to go about it.
I don’t have the H2D or filter/purifier to know if there’s a reason it wouldn’t work, but maybe it would be easy to print a throttle valve so it doesn’t pull too much air through the printer and temps can be maintained?
It’s just best to not use it at all. The recirculating hepa/carbon filter in the chamber is doing a much better job anyway without disturbing chamber temps or having to take the vent slats off the machine.
I tested this, and it definitely prevents the chamber from reaching 65 °C when the Smoke Purifier is running at the same time. I didn’t just make that up
That said, if you run the purifier at the lowest fan speed while printing PLA, PETG, or other low-temperature materials, the air will still be effectively filtered — and you won’t risk overheating either.
I’m fully aware that the chamber fan isn’t actively used for high-temperature materials, but that doesn’t mean air can’t be drawn through the channel — which, as proven, it clearly is.
Probably, but that reducer should be easy to open and close, as you’ll want full airflow when using the laser for cutting and similar tasks. Maybe something on the filter side so it’s easy to access — sounds like a future project
I actually tried that by accidentally leaving it running
I didn’t really intend to extract any air, since the internal filter should handle that. However, after the print finishes, the chamber fans kick in — so having some sort of reducer would be helpful to avoid having to manually switch the external filter on.
You can configure that in the filament settings, both for during the print and after it’s finished. The “during print” setting doesn’t work on the H2D for high-temp filaments that require a heated chamber, but the post-print fan settings do.
What’s odd is that there’s currently no way to turn off that fan via Handy — it can only be done from the printer’s screen. You need to switch to cooling mode there to shut the fans down.
So yes, you can definitely vent the chamber after a print if you want to — whether that’s intended behavior or a bug is unclear.
My Studio interface is set to Swedish, but you’ll find this setting under the Cooling tab for each filament. If you don’t see it, you’ll need to enable Enhanced Air Filtration in the printer settings to make these options visible at the filament level.
I kind of wish they’d also put a chamber heater fan control there as well. When a print is finished I’d like to turn that fan back on, without heat, so it can continue to scrub the air in the printer for a bit before I open the door.
It should be possible — when using the laser module, there’s a countdown before the exhaust fan shuts off, and they indicate it’s safe to open the door after that.
As I see it, it’s just a firmware feature they could implement if they wanted to.
Youre doing it wrong lol. The internal filter is for that stuff. All other stuff and lasering is for the external filter. If the front vent doesnt pop up, dont turn on the external filter. You may also burn up whatever servo opens and closes the rear vents.
Also, there no downside to leaving the tube hooked up to the printer. The printer can still cool the chamber with only 30% exhaust fan for petg, pla, tpu
The external fan could have been smart, if it had aven a tiny bit of machine integration, but seems it was an afterthought probably rebranded from a cheap 3rd party.
Not according to some early tests, where the printer reported excessively high chamber temperatures when printing PLA, PETG, and similar materials with the hose connected. However, I haven’t experienced those issues myself.
When the exhaust is triggered after a print, it activates the exhaust fan as if it’s in cooling mode — except that the printer remains in heating mode, so the top hatch doesn’t open.
