DIY 3D printed Hepa air purifier

[@nickvassiliades6135]

Really great project! HEPA filters are considered consumables and should be replaced anywhere between 3-6 months depending on how often they're used. Making the filter removeable would be a great addition rather than having to pry it from the hot glue fixing when you need to replace it. Nice work keep it up :)

[@jonathanaird7986]

Using the Amazon basics hepa filter you don’t need 3d printing. It’s cylindrical and the 120mm arctic fan fits exactly right on top. No need for hot glue either! Just need a flat surface and a power source for the fan.

[@cliffordroy2863]

Great idea! I'm working on a custom case to combine both filter & always-on media PC. However, it would be best to use high static pressure fans. I'm using Silent Wings Pro 4 140mm. 2.2mm H2O each. Also, I think the filter should have a larger surface area than the total round area of the fans. I'm using a washable 14x14 AC filter as a pre-filter (I have cats). HEPA filtered case = totally white/LED build :) I'll upload the files to Thingiverse when finished, and upload a YT video

[@jonny11bonk]

THIS IS THE THING I WAS LOOKING FOR. Using the Arctic P14 Fans, I have 2 spare ones and I finally found them a use. Just go and make a Kickstarter with this.

[@Hdtjdjbszh]

this project would also work great for computers in a woodshop

[@Hdtjdjbszh]

with a low airflow fan like a computer fan it is better to blow into the filter, this is because you get less "leakage" when you draw air thru, especially with a frame or gap, you get more incedental air coming in to the fan blades. When you push are into the filter anything that comes out the other side of the filter gets filtered

[@Memento86Mori]

Those fan really good. Artic is basically very close to noctua fam

[@Alyxif]

You did make sure the filter is sealed against the body, but hot glue only on corners of the fans? (unless you seal it off camera) In pull configuration, Everything have to be air tight. Or the air will bypass the filter through some small space (between the frame of the fan and body of the filter for example...) holes/cracks thus decreasing efficiency of the filter unit. Dont mind the smoke, its typically from hot glue, not from PLA, most hot glue sticks have lower melting point than PLA (around 120°C), unless you have some better glue sticks and gun that required up to 200°C.

[@3dprintingcave778]

i hate to be that knife guy but a knife isnt a prybar lol use the right tool for the job, great job on the video i enjoyed it

[@MayankJairaj]

Awesome! You could add a powerbank to make this portable(Or go carbon neutral using a solar panel) I used a few leftover fans for this but changed to 5 cheap 120mm fans. I undervolt it at 5v to make it supersilent. Is using acetone to glue plastic (by dissolving it) a viable technique?

[@williamdetempolivre]

Acetone works best with ABS plastic, not PLA, super glue do just fine with PLA.

[@AtAGlimpse_UB]

My pc fan is unable to blow air through a tissue paper.. would it suck air through a HEPA filter??? PLSS helpp

[@TableTopBiker]

I would like to see more. 👀

[@mwhiten100]

Great build. If you're interested in taking this a bit further, check out kzbin.info/www/bejne/f6PHYWClp9iGfa8 (a good video on how to build a high performance Corsi Rosenthal filter, without the 3D printing). It uses foam core boards for the frame. In that build, he use 4 HEPA filters to reduce the air flow resistance. Choosing the Arctic P14s was smart, because they are designed to generate higher static pressure.