HEPA Filter for 3D Printer
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**Air Scrubber for 3D Printers**
The *Prusa i3 MK2S* is a great printer especially for the hobbyist or light industrial desktop user. That having been said it is a raw printer without a lot of accessories that would make it a great printer. The is the first in a series of accessories that I designed for the *i3*. The others are:
- Enclosure
https://www.thingiverse.com/thing:2396990
- Spool Holder
https://www.thingiverse.com/thing:2398480
- OctoPrint Print Server
https://www.thingiverse.com/thing:2401423
This accessory is intended to remove VOC and Ultra Fine particles from the enclosure housing the printer.
3D Printers produce VOC and Ultra Fine particles as a unwanted byproduct of melting and extruding plastics. See recent study by Illinois Institute of Technology and The University of Texas at Austin among others: http://pubs.acs.org/doi/full/10.1021/acs.est.5b04983
Additionally some filaments emit a noxious odor when heated to high temperatures.
Originally the plan was to exhaust 100% of the filtered air either inside the enclosure (moisture elimination & heat retention) or outside the enclosure if internal ambient temperature was not a concern. The exhaust configuration could be changed prior to each print. After several experiments it was determined that a portion of the filtered air (about 40%) should be recirculated and the remainder ported outside the enclosure. By porting a portion of the filtered air outside the enclosure, the pressure…
