I was using a cardboard box as a spray booth for my airbrush the other day and, while it is acrylic paint, I decided I still might want to filter that stuff. This was designed around a 12vdc, 80mm muffin fan, but when I put it all together, my fan didn't have enough oomph to pull smoke, much less paint particulates. I found a blower fan in my fan drawer with over double the current draw of the muffin fan. That didn't fit my original design, though, so rather than re-design the whole thing, I designed an adapter plate.
Then, this was designed for m3 countersunk screws. Of course, I couldn't find these locally, so I found that I could drill the holes out to 1/8" and I was able to use 6-32 electrician screws. I'll give the sizes needed in both m3 and 6-32.
Depending on the version you go with, you'll need different hardware.
80mm Fan with Hood
* 80mm fan (obviously)
* 4x 35mm long m3 or 1-1/2" 6-32 screws
* print [hood_optimal] or [hood_flat] (see notes below) instead of [adapter]
* 102mm blower fan (similar to TYF140LJ05 - https://www.ebay.com/itm/12-V-DC-TOTO-Quiet-Blower-Fan-103-x-100-mm-2100-RPM-7-Watt-TYF140LJ05-/272456604640)
* 4x 10mm long m3 or 3/4" 6-32 screws
* 4x 40mm long m3 or 2" 6-32 screws (and 4x m4 nuts as spacers if using 6-32 screws)
* print [adapter] instead of [hood_]
For either option, print [housing], [insert], and [tray].
The filter is a standard coffee filter (although I am thinking about trying pantyhose). Lay the filter over the tray and press the insert down into the hole, pulling the filter down with it as you go. Once the insert is fully seated, tear or cut the edges off the filter flush with the tray. Slide the tray into the housing and you're good. Be sure to check/change the filter as needed.
Check out the assembly photos if my babbling doesn't make any sense :)
When printing the hood, it is preferable to print [hood_optimal] if able with 29mm brim to minimize the supports needed as well as the length of time needed for printing. If your bed's adhesion is spotty, feel free to print [hood_flat] instead.
I am a self-proclaimed know-it-all. I will tackle any project regardless of my experience, or lack thereof. Always ready to learn something new. With over 25+ years experience in electronic repair and 10+ years experience in small engine / ATV / motorcycle repair, there is nothing I can't fix, modify or build.
Why a pepper? In case anyone is curious as to why there is a hot pepper embossed into most of my designs... My nickname is Pepper and that little pepper logo is a hell of a lot shorter than "Copyright © 2017 by Derek J.G. Tombrello" which is how I usually sign my work :)
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