Air Filtration System for 3d printers

thingiverse

2018-02-15: Filter towers updated, now even more printable. 2018-02-16: Coarse Filter upgraded to V4, no longer too large, fits better in the housing. I love 3D printing but hate the smell of it. Some research papers indicate that the fumes might be bad for you, so I designed this air filtration system. Before installing the filter, cut a 116mm hole into the housing. Make some extra space for the fan's cable if you put it in the filter tower. You'll also need: - A powerful 120mm fan (mine can spin up to 2000rpm). Don't worry, it won't be too loud through the whole filter material. - Some kind of coarse filter material (I used a pollen filter). - A fine filter from a vacuum cleaner (I used Rowenta ZR004801). Any other filter with a size of 166 x 142 x 37mm or lower will work. - An activated carbon filter (I used hh50705-v0parent). Any other filter with a thickness of up to 8mm and a size of 160 x 149mm will do. - 5 M3 x 14 screws and nuts - 4 screws for the filter tower itself, length depending on the housing and fan installation The filter system consists of three types of filters that need to be installed in this order: - Everything goes into the filter tower. There are two versions: one has enough space for a 120mm fan, another is smaller with the fan installed under it. The tower can be printed without support, put the side with the fan grill on the heat bed. It will work, even my stock A8 printed it perfectly. - Coarse filter: This is the first layer of filtration. I used a pollen filter for my windows. Any thin filter material should work. Put the filter material in and cover it with "coarse_filter_without_fan_V3.stl" or "coarse_filter_with_fan_V3.stl". If you don't install the fan on top, put 4 screws (up to M4) through all of it and use them to connect the filter tower to the housing. The distance between the 4 holes is 105mm. - Install the 120mm fan on top of the coarse filter and secure it with the screws for the coarse filter and filter tower. You might want to use the fan frame stabilizers I uploaded: https://www.thingiverse.com/thing:2782394 - Put the fine filter on top. First, cut off the extra part used to fasten it in the vacuum cleaner. Use a small saw for this. - Put the activated carbon filter into "activated_carbon_filter_bottom_V2.stl" and then put "activated_carbon_filter_top_V5.stl" on top. The middle parts fit together tightly. Secure them with M3 screws. Now put it on top of the filter tower. This part has not been tested yet, but I'm sure it will work. Any ideas or questions? Just comment! If you've made one, I'd love to see some pictures! Disclaimer: I don't know much about air filtration. I did some research, but I can't guarantee the efficiency of this filter system. You're responsible for yourself. I used these filters for the system: Rowenta ZR004801 Hepa-Filter Compact Power H12 (available at amazon germany): https://www.amazon.de/gp/product/B004T30CVQ/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 cat-it active charcoal filter: https://www.amazon.de/gp/product/B001NOEG3E/ref=oh_aui_search_detailpage?ie=UTF8&psc=1