I printed some parts to route ASA/ABS fumes from my H2D out the nearby window with some ducting, but realized the chamber fan is closed and doesn’t run when printing ABS/ASA, causing nasty fumes to just kinda leak out from the case overtime.
Any way to run the fan just a little to get some airflow? (Would this even do what I want?)
Not at the moment. However, there is a thread discussing this issue:
That might offer a solution for your situation as well.
How about this
You wouldn’t want to run an exhaust fan with ABS/ASA, that would increase the risk of warping. Whenever you blow air out, you have to suck in cool ambient air. No way around that. I think Noah’s idea of augmenting the in-case circulation and filtering is the way to go for you. Not sure a different filter will be enough though. The filter in it is pretty nice with 3 stages and a significant size. It may require a secondary system like what Bento makes.
Personally, it’s not too bad for me. I have no trouble being in the same room with an ABS/ASA print going. There is a hint of the smell, so I can see if you are sensitive to it, it might be a problem.
I tried printing ASA for the first time and I almost had to cancel because of the smell, makes me wonder if the filter is even working. My air purifier right next to it was going at 100% speed (with a carbon filter) but it didn’t make a difference.
I understand the request. On my X1C with bento box, I still sometimes run 10% chamber just to control that leakage flow. I have a secondary filter running outside near the exhaust port. It keeps most of the heat in, but at the same time keeps the ABS fumes from leaking around the entire case.
In the related note to the exhaust fan, you still have manual override AFTER a print is initiated. At least Functional Print Friday was able to override the automatic control (for PLA). I assume it’d work the same for enabling it on ABS/ASA.
edit: If you really want, you can modify the machine start gcode. look for ‘set airduct mode’. When the temp is >= 40, it’ll do a M106 P3 S0. Replace that with whatever fan speed you want, S255=100% I suggest S20. You might also need to swap M145 P0 to open the louvers.
You will need to vent the area around the machine, not the H2D itself.
The internal carbon filter does reduce VOCs during chamber heated printing in my experience.
A typical air purifier is not going to remove VOCs. Even if the filter has some carbon its not nearly enough to be impactful considering the high volume of air.
Where does the heat come out of on the H2d im trying t osee how much wall clearance I should be giving it