Okay cool! Seems like Bambu could use a little bit of equipment communication updating lol.
Ok here it is - a double filter version - and with NO annoying Allen key time! Filters are angled in case you push it up against the wall. Just need the filters to arriveā¦
3 Likes
This is another way to tell itās working - look at the colour of the filters compared to a new oneā¦ gross. This is after about 1kg of abs-gf
4 Likes
Where did you find that filter?
From this post, there is a link, looks like a good choice. Available in Amazon US, DE and Aliexpress too
Well, itās definitely working! Haha. I donāt print abs, so I wonder if Iāll see anything like this from nylon. I guess weāll find out.
I wonder how bad your oem filter is looking lol. Iām sure that one has seen much more than 1kg by now.
Haha yeah, the carbon is prob all clogged up already. Nylon apparently has some nasty stuff too, just not as smelly
@KYZ_Design if youre ever under size constraints or just want a cleaner looking setup, these are also cheap. With a tpu seat, they would be air tight also. Just a thought for another model to add to your collection. Now that we can do tpu mixxed prints
Or
Nice, thanks. I was tempted to use 8 or 12 of the smaller filters I had but the marketing words got me. āH13 HEPAā!!! (Although mine are coming from Aliexpress so itās probably just some tissue paper)
Edit: washable filter? That could be good actuallyā¦
Yeah. I wonder if we could rinse them by blasting alcohol through them. Or just a soak
Will this also have carbon ?
Yea nylon definitely does. I think the main thing it releases is caprolactam. Which isnāt great, but at least itās not a carcinogen lol. The carbon should be effective at soaking it up with enough passes.
1 Like
Nope. The filters have a very very small amount of carbon so that doesnāt count eitherā¦ I might add some screw holes so someone could add another layer though.
Looks like there is a new aftermarket upgraded H13 HEPA filter available.
Hopefully their claim to acid free carbon is legit. Itās so hard for me to trust aftermarket filters with carbon. Especially in such an expensive machine.
They do make it look pretty good. I think for now Iāll pay the premium for the Bambu filters. At least until some aftermarket options are vetted by brave folks lol.
I did order one of those, will let you know how it goes.
2 Likes
Ikea Upptavind fan arrived yesterday, loaded with @maximit carbon filter mod and some Nevermore carbon plus printed the internal exhaust fan filter setup.
Started making up another Air Quality monitor sensor box so I can place them in different places and look at what is spewed out whilst printing.
My printer is on a raised box section that sits above my stairs and is also a corner, room is pretty small and Iāve got the windows open at the moment - AQM is at the back left of printer sat on a box Iām using as a noise damper. Tried the Ikea filter towards the front of the printer during an ABS print with no real impact on the sensor readings.
Left an ASA print on overnight but moved the fan to the rear of the printer with itās intake facing the printer (yes I know itās closed for ASA printing but figure with the poop chute remaining open its the most likely vector for fume escape.
PM side remains low, barely seeing anything above 5ug/m3 and PM1, 2.5 and 10 generally sit around 0ug/m3. Iām logging data from a public AQM site in Oxford city centre (closest) and that if often seeing PM 2.5 levels around 30ug/m3 and PM10 at 10ug/m3.
VOCs, this is my area of concern at the moment, whilst the readings I am getting are well within safe limits it is increased, the biggest problem being VOCs are a big area with safe limits for some being down as low as 9ug/m3 and others up in 9000ug/m3! Started an ASA print yesterday evening, put the windows for the room on the vent catch, Ikea filter on 3 and closed the door, VOCs raise from 59ppb to 119ppb inside 15 minutes during the pre-print warm up phase, then a gradual decline back to 60ppb over the next hour and a half and down to 33ppb by the time I opened the door back up at 7:00 this morning. Print failed (forgot the glue - doh!) about midnight and paused so was sat there at full temp over the period just not doing anything.
Restarted the print this morning and similar trend, albeit reduced as I have the windows open and door so am getting a decent airflow change in the room.
Formaldehyde results were arguably worse, started at around 15ppb then just kept climbing until I opened the door this morning, with a peak at 51ppb - filter kit isnāt touching it.
After thinking about this a bit more, thatās not a surprise, carbon isnāt great at adsorbing formaldehyde, you need zeolite for that and the H2Ds factory filter nor any of the additional filtering I have added have zeolite.
TL:DR(ish), Iām happy with the PM levels, near enough to baseline pre-printer.
VOCs, good that the Ikea filter is pulling the VOC figures down but it takes a long time.
Formaldehyde, worrying, WHO recommend 7.9ppb for long term exposure, going to get some Nevermore boost (50/50 carbon and zeolite mix) for the internal filter and monitor, will consider using it in the Ikea filter too.
Still waiting on the ducting to run the exhaust outside with an in-line fan - expecting this to have a large impact on fume build up as even when printing ASA/ABS etc I can run the system to pull air near the printer outside.
Interestingly there is a study that having wild dandylions (T. mongolicum) will reduce formaldehyde in the air: [Efficiency and mechanism of formaldehyde removal from air by two wild plants; Plantago asiatica L. and Taraxacum mongolicum Hand.-Mazz - PMC]
2 Likes
Thanks for all the info and testing. Yes I leave my IKEA filter on speed 3 all of the time. Let us know how the carbon and zeolite mix works!
Spider plants are also said to be good at removing formaldehyde from the air along with carbon monoxide, xylene, and toluene.
1 Like
wanna try a sealed poop box? I have a design here:
I can also share the f3d file if you need to adjust it yourself. in my current design you might want to change a magnet hole into a pin by adding a part into the model (you can also do that via slicer easily though).
You might want to add a 6mmx1.5mm round pin hereā¦ to avoid adding another magnet 