Fumes?

Fumes? Hi all, Since I didn't want to hijack the thread on Mendel90 enclosures, I thought I'd start a separate thread on controlling the fumes. I'm too planning to build an enclosure for a while now. But what I want to add is a fume extraction mechanism. I've already read a study stating that a desktop 3d printer can be labelled as a "high emitter" of nano sized particles which could be harmful. Since I'm always close to the printer I think I should take care of this risk. So I was thinking of attaching a fan to some air-duct material. But I'm a bit worried about creating a draft inside the print chamber which could disturb the printing process. Is there a smart way for dealing with this? Regards, Nilez https://reprap.org/forum/read.php?292,327554,327554#msg-327554 Wed, 16 Sep 2026 17:35:46 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?292,327554,470147#msg-470147 Re: Fumes? https://reprap.org/forum/read.php?292,327554,470147#msg-470147

Quote
neildarlow
The only thoughts I have are that the hot-end fan will push the fumes down towards the heated bed and they will circulate everywhere from there. I think it might be an idea to vent the case at the centre-rear and let clean air in at the top of the case. A low airflow should prevent too much breeze effect and the incoming cool air will mix with any rising warmer air. I am not sure that the conventional wisdom of pulling the air out of the case top is a good idea when you consider the machine structure and existing forced airflow.

Regards,
Neil Darlow

Just thinking out loud for a moment - would either a reversible fan (if such a thing exists) or a push/pull configuration where only one is active at a time, located where the current bed fan is mounted be a suitable solution to this?
I'm guessing that for most enclosures people have simply blanked out the existing bed fan intake - if this could be done instead then we don't lose the use of a bed cooling fan?]]> QuackingPlums Mendel90 Fri, 13 Feb 2015 04:58:48 -0500 https://reprap.org/forum/read.php?292,327554,463065#msg-463065 Re: Fumes? https://reprap.org/forum/read.php?292,327554,463065#msg-463065 www.youtube.com]]]> macsoft Mendel90 Fri, 30 Jan 2015 12:41:51 -0500 https://reprap.org/forum/read.php?292,327554,330392#msg-330392 Re: Fumes? https://reprap.org/forum/read.php?292,327554,330392#msg-330392 QuackingPlums Mendel90 Wed, 26 Mar 2014 12:09:00 -0400 https://reprap.org/forum/read.php?292,327554,330367#msg-330367 Re: Fumes? https://reprap.org/forum/read.php?292,327554,330367#msg-330367 this carbon filter ?]]> Salocin Mendel90 Wed, 26 Mar 2014 11:20:20 -0400 https://reprap.org/forum/read.php?292,327554,330269#msg-330269 Re: Fumes? https://reprap.org/forum/read.php?292,327554,330269#msg-330269
Here's a link to one of the papers: [www.sciencedirect.com]. It concerns the emission of UFP (ultra fine particles) caused by the heating of PLA as well as ABS. Although ABS emits 10 times more. Apart from the fumes, I need to build an enclosure to keep heat in because I'm moving my printer to a garage space.]]> Nilez Mendel90 Wed, 26 Mar 2014 08:12:24 -0400 https://reprap.org/forum/read.php?292,327554,330210#msg-330210 Re: Fumes? https://reprap.org/forum/read.php?292,327554,330210#msg-330210
Also, if it's just extraction you need rather than temperature control then is it viable to just have a hood and fan duct above the printer to remove the majority of the fumes?]]> QuackingPlums Mendel90 Wed, 26 Mar 2014 05:15:13 -0400 https://reprap.org/forum/read.php?292,327554,327775#msg-327775 Re: Fumes? https://reprap.org/forum/read.php?292,327554,327775#msg-327775 Nilez Mendel90 Thu, 20 Mar 2014 17:18:17 -0400 https://reprap.org/forum/read.php?292,327554,327678#msg-327678 Re: Fumes? https://reprap.org/forum/read.php?292,327554,327678#msg-327678
Regards,
Neil Darlow]]> neildarlow Mendel90 Thu, 20 Mar 2014 13:24:01 -0400 https://reprap.org/forum/read.php?292,327554,327554#msg-327554 Fumes? https://reprap.org/forum/read.php?292,327554,327554#msg-327554
Since I didn't want to hijack the thread on Mendel90 enclosures, I thought I'd start a separate thread on controlling the fumes. I'm too planning to build an enclosure for a while now. But what I want to add is a fume extraction mechanism. I've already read a study stating that a desktop 3d printer can be labelled as a "high emitter" of nano sized particles which could be harmful. Since I'm always close to the printer I think I should take care of this risk. So I was thinking of attaching a fan to some air-duct material. But I'm a bit worried about creating a draft inside the print chamber which could disturb the printing process. Is there a smart way for dealing with this?

Regards,

Nilez]]> Nilez Mendel90 Thu, 20 Mar 2014 07:11:15 -0400