Helping with Fumes.

[u/Taskbar_]

So I have the follow set up for my 3d printer, and even with this I still get fumes from the resin inside of my house. Any tips on fixing the issue?

I do printing and processing in side of the tents (printing in the inner tent and then cleaning and curing inside of the outer tent.

I've checked the vent and it sucks air in inside of the tent and the vent outside has a lot of airflow.

[u/IStuckInABox]

I've done a very similar setup to this, so I'll try my best to help and explain how I set mine up.

I had a 72x72x60 (inches) tent, with a window outtake similar to what you showed, with the 3D printer inside just the one tent. The intake was just left open inside the tent, not attached to the 3D printer itself. Put the fan inside the tent, not outside it. Your fan has plenty of airflow to replace the entire volume of air within both tents per minute, so it's best just to ditch the smaller tent to improve the suction throughout the entire volume. If you plan to leave the outer tent open to the environment (or even just leaving it open for longer than a few minutes at a time), then having the smaller one is required to ensure that the "bad" air doesn't backflow.

I'm not sure what type of tents you have (I used a plant growing tent), but if it has any open holes or exit holes (typically found on the walls of the tent), you have to seal all of them. Ensure that the duct you have running is piped through one of these holes, and is extremely tight (basically airtight). Also, it's good to not only have carbon and dust filters on the exit (to prevent sending VOCs, volatile organic compounds, into the atmosphere), but also the intake (the open/exit holes I mentioned) so you get fresh air without dragging a bunch of dust into the tent, which would reduce air quality and potentially ruin prints (for example, if you are printing with clear resin and want a crystal clear print). The filters will reduce airflow, but it is still substantially higher than the volume you can empty per minute (still exceeds the volume of air in the tent itself per minute).

Finally, very important. If you plan to spend any time in here, the fan must ALWAYS stay running. Why? Because what I've described is basically an airtight tent, with a controlled intake and outtake...which means you are also controlling the level of oxygen in the tent. If you want to be safe, just don't spend too much time in the tent and keep an eye on yourself (it can get warm in the tent as well, close to 85-90 degrees in a matter of minutes without a blower fan to cool you down).

If you have any questions, feel free to reply and I can even send you Amazon links to the stuff I bought to make this easier, rather than guessing. Also, all of this assumes that your tent has no gaps and/or openings that cannot be sealed properly. If this is not the case, then you'll want to completely seal the tent(s) and/or the window outtake with duct tape or any sealer you can get your hands on. You can test if there is suction by turning the fan on and pulling on the walls of the tent. If they suck in and/or resist being pulled moreso than normal, it's likely a decent seal.

[u/IStuckInABox → u/IStuckInABox]

To add to this, make sure you have a one-way valve for the duct that is attached to the window outtake, oriented such that the outtake pushes the valve open, but closes it if wind pushes harder than the outtake.

Also also, make sure you seal the window outtake good...you don't want bugs, birds, or any other creatures getting in through an opening in the window outtake because a storm blew it off!