Enclosure with HEPA filter  

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peter.c20
(@peter-c20)
Reputable Member

Hi, I plan to use this printer in a small bedroom but worry about toxic nano-particles. Is there a protective enclosure with HEAP filter system? I cannot find one one Pursa website. Perhaps there is one from a 3rd party company?

Posted : 03/07/2019 12:59 am
doug.s7
(@doug-s7)
Active Member

Here is an enclosure specifically for prusa printers  https://www.printedsolid.com/products/safety-enclosure-for-prusa-printers

It has holes for a BOFA Print Pro 3 HEPA filter system or you can mount your own 60mm fans on the side.  I don't have any experience with this enclosure yet but I do plan to get one for myself.

 

Best Regards

 

Posted : 03/07/2019 4:21 am
Tim
(@tim-m30)
Illustrious Member

I have a particle counter near my printer ... I see more "stuff" in the air when I cook than when the printer is running;  PETG gives off a bit more 2.5um stuff, but still below cooking.  Generally readings are under 15@2.5um, and under 20@10um. PETG will see 20 to 25 @2.5um.  A moderate pollen day and I see 100@2.5um.  Cooking popcorn I see 50@2.5um.

It is always wise to get more than one opinion......
Posted : 03/07/2019 7:23 am
Andy
(@8tumul)
New Member
Posted by: @doug-s7

Here is an enclosure specifically for prusa printers  https://www.printedsolid.com/products/safety-enclosure-for-prusa-printers

It has holes for a BOFA Print Pro 3 HEPA filter system or you can mount your own 60mm fans on the side.  I don't have any experience with this enclosure yet but I do plan to get one for myself.

 

Best Regards

 

 

absolutely you help me... thanks bro.
I am also curious about a protective enclosure with HEPA filter system.

Posted : 06/02/2020 7:58 am
Tim
(@tim-m30)
Illustrious Member

HEPA filters are not sufficient for filtering out particles given off in FDM printing.   The HEPA filter is orders of magnitude too porous.  You would need a gas exchange system to eliminate the stuff coming off the print head.

This topic has been covered in depth at least a dozen times, and unless you hermetically seal the printer case, you contaminate the air in the room. Even Class 1 clean room filters are insufficient since particles given off by FDM printing are smaller than 0.1um.

https://cfpub.epa.gov/si/si_public_record_Report.cfm?Lab=NERL&dirEntryId=344258

 

This post was modified 7 months ago by Tim
It is always wise to get more than one opinion......
Posted : 07/02/2020 6:31 am
Max liked
wentzt
(@wentzt)
New Member

@tim-m30

NASA disagrees. They claim HEPA sufficiently filters nanoparticulates primarily through the effects of diffusion.

Both HEPA media filters and packed beds of granular material, such as activated carbon, which are both commonly employed for cabin atmosphere purification purposes, are found to have efficacy for removing nanoparticulate contaminants from the cabin atmosphere. When used alone, HEPA-rated media provides superior performance for removing virtually 100% of particulates.

https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20170005166.pdf

Posted : 08/07/2020 10:16 pm
peter.m26
(@peter-m26)
Honorable Member

If possible , the best way is to blow it to the outside air. Then no air can go into your room. And no filter needed.

Posted : 09/07/2020 9:51 am
rob.w5
(@rob-w5)
Trusted Member

One feature these HEPA and other rated filters have is that the fibers making up the filter are made of a plastic material that has been polarized.  Rated filters, not cloth, are good at filtering very small and very large particles.  0.3 micron diameter is the tough spot.  Smaller than that and they are light enough that the electro-magnetic force is strong enough to overcome the particle's momentum and allow it to 'clump' onto the fiber.  Any larger, and it's likely that the particle will collide with the fibers.  I'm not sure how small the nano-particles we breath when we print are, but the further in diameter they are from 0.3 micron, the more likely a REAL filter will catch it.

Posted : 13/07/2020 4:42 pm
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