Notifiche
Cancella tutti

Horrendous smell of the AC bed  

Pagina 2 / 2
  RSS
Artur5
(@artur5)
Honorable Member
RE:

 

Posted by: @alkaba

Yep, now its sounds 100% the adhesive. Try to google "Death smell Voron" or "3M 468MP smell" and you will notice the same symptoms and smell description. Once you go around the 115C mark, the smell will likely never dissapear. So even if Prusa would send me 10 new printers, they all would smell the same after a while. 

That “Voron death smell” phrase made me laugh, please take no offence. I use textured, satin and smooth PEI plates on my AC heated Voron printers. Practically all smooth PEI sheets from any brand are glued to the steel base with 3M-468MP adhesive.

I print often at bed temperatures up to 120C and I never noticed the slightest smell coming from the bed. Some adhesives used on the bed, like 3Dlac, smell a bit of hairspray, but that goes away before the bed reaches the working temperature.  Filaments like ASA,ABS or CF filled materials, can smell too, but it’s hardly noticeable if the doors of the printer are closed. On my printers, the bed itself is totally odorless.

Maybe this problem is related to a defective or low quality component of some Prusa Core One L units ? ( the SSR or the silicone heater pad, for instance ).

Questo post è stato modificato 2 days fa da Artur5
Postato : 04/06/2026 5:49 pm
mildly angry possum
(@mildly-angry-possum)
Active Member
RE: Horrendous smell of the AC bed

Similar situation only worse.  Wife has brought to my attention that it is smelling up the whole house.

I'm due to retire in little over a week and printing is supposed to keep me out from under my wife's feet.  I'm def in a bit of a pickle. 🤔 

Postato : 05/06/2026 1:31 am
Same Old Shane
(@same-old-shane)
Utenti Admin
RE: Horrendous smell of the AC bed

So when I saw this and reported it, first thing I asked about tests that were ran, (health wise). Now granted.. keep one thing in mind, We do not have a chemical engineer on site, but they did use a device to measure the VOC and it registered as 2.4pmm, and this was the results. 

A VOC (volatile organic compound) level of 2.4 ppm is an order of magnitude lower, and the assessment is much more reassuring:

1. In a typical indoor environment (apartment, office)Although the optimal healthy indoor level is up to about 0.5 ppm, a level of 2.4 ppm is not inherently dangerous or toxic.This is a perfectly typical value in a room where hand sanitizer was just used, a table was cleaned with regular detergent, someone sprayed on perfume, or an orange is being peeled. The PID sensor in the GX-6000 immediately detects these airborne molecules (alcohol, limonene) and registers a reading in ppm.For peace of mind, simply open a window for a few minutes to ventilate the room; the reading should drop to zero.

2. In an industrial environmentIn industry, 2.4 ppm of VOCs is essentially a negligible amount (unless you’re measuring in a completely sterile laboratory or dealing with a highly toxic carcinogen like benzene). For common chemicals and solvents, this value is well below any warning limits (which typically start in the tens or hundreds of ppm).The device is therefore functioning correctly and displaying a realistic, but in this quantity more or less harmless, background level of volatile substances.

Now, not trying to pass the buck or anything, but keep in mind as I wrote before, its mentioned in other posts online that other printers have seen this similar issue. Is it all of them (at least for us) no. We do have a few that were reported and are looking into them. I did ask for some short term fixes and they tried our fume extractor, and that appears to have worked well. I am not saying for everyone to go out and buy our one, but perhaps something similar, or even active charcoal packs. Previously, I had very good luck with active charcoal mixed with bamboo when working with very strong odors from resin printing and also ran a air purifier in my farm as a back up with the smell. 

Its still being looked into to see what the exact cause is and what can be done on our end about it. As soon as I have any more info, I will update you. Also, just a FYI. I didn't post that I already shared it as I wanted to respond that it was reported and also have some sort of initial update

Shane (AKA FromPrusa)

Postato : 05/06/2026 6:59 am
2 persone hanno apprezzato
mildly angry possum
(@mildly-angry-possum)
Active Member
RE: Horrendous smell of the AC bed

For clarification, I get headaches from intense odors like sitting next to someone who goes overboard on perfume/cologne, co-workers who get weird concoctions from food truck.  When I was performing the test for support, I was in enclosed room with windows closed so odor was extra intense.  My apologies if it came across as Chicken Little.  I do have an airgradient air monitor and it wasn't complaining during test. Little or no voc's registered.  Just stinky.  

Posted by: @mildly-angry-possum

I did reach out to them last night via chat, supposed to hear back from support team by email with fix/resolution. I did some test without any filament loaded just heating up printbed.  Def not filament.   Had to limit my time doing test for support since the fumes/odor was giving me a huge headache. 

 

Postato : 05/06/2026 7:01 pm
Pagina 2 / 2
Condividi: