We currently have ultimaker S5 and we will be getting in a week two new H2D combo’s.
I am a bit concerned about fumes and particles…
Has any one used some air purifiers and got good results ?
Currently our printers are located in an inner room like an internal or parallel corridor.
It is not a closed room, it has an opening of about 1.5m width that is open to the actual corridor. It does not have any windows and every one passing by that area may be exposed to fumes.
One idea that cam in mind is to place an air purifier in the space.
You’ll be hard pressed to find a purifier capable of filtering the resin byproducts from the air. Most high-end air purifiers can only capture down to 0.3 microns. Some will claim down to 0.1 micron but I have doubts on that based on their price. Even so, that’s not enough to extract all the resin byproducts.
Here’s a chart I found to show the particle sizes of various pollutants.
Most of that stated particle size that shows down to 0.1 to 0.3 micron is the HEPA filter in the air filter. The activated carbon in the filter is what is going to pull those smaller particles out. So when you’re talking fume generating stuff which are generally particles you cannot see, you need a filter with activated carbon.
I’ve been using Levoits filters for years and most of them have at least some carbon in them. Their ones with the circular type filters seem to hold less carbon than their flat filter ones. I have some Core Mini’s that are great for filtering small rooms but they don’t really have any solid carbon, just a mesh so it does a poor job at odor control. But I have a thing for them I designed that fills the empty space in the center of the filter with a bunch of carbon so they work great at fume removal.
Im going to share something extremely stupid that I did. I once printed a vase that leaked water, so I coated the inside with resin. It was taking forever to dry, so I put it in a heated and filtered printer to dry. I was thinking it would stay somewhat contained for the short time thatbI planned on having it in there. Then I fell asleep(night shift worker). Long story short, I had a headache for 3 days and probably did some sort of damage. I think this is the resin smoke they may be talking about? But im not sure (maybe because the resin inhalation lol)
One of the dumbest things ive ever done… It was hard for me to share, but hopefully helps others not make my dumb mistake.
I also had two home purifiers in the same room. The printer had quad hepa filters and carbon. Didnt make a difference.
Something I often worry about is how much carbon dust is blown into the room from loose carbon filters. We pack them loose, so they bounce around and slowly break down as the pieces rub against each other. Based on that chart, the hepa filter doesnt stop it. I wonder if the carbon is actually the worst thing we are breathing in each day(unless you’re baking resin patties.)
The issue is that activated carbon filters become saturated quickly, especially when printing materials like POM that emit formaldehyde.
For an 8-hour print in a Bambu Lab H2D with an actively heated chamber, I allocate approximately 250–300 grams of high-quality activated carbon to effectively adsorb formaldehyde and prevent accumulation in the air.
This amount accounts for filter saturation over time, ensuring continuous adsorption capacity throughout the print session.
