The handiest tool in my shop, next to the Dremel, is my remotely mounted
Shop Vac.  By locating it outside with 2" PVC Pipe, the screaming noise
is barely audible and the exhaust air does not blow up dust on the
floor.  I have the 2"x10'long hose dropped from the center of the
ceiling so it is easy to access anything in the shop.  The switch is
mounted on the hose end for convenience.  

So what does this have to do with a Box Fan Filter?  Any Sanding or
Dremel operation has the Vac running with the nozzle right-at-the-work.
Makes for a very sanitary operation.  I think it's a better alternative
to a Box Fan Filter.

I wear a Particle Mask too because I finally found one that is
comfortable.  3M has a super soft, lightweight, reusable one with
replaceable filters.  It's a #7502 and I highly recommend it.  

Steve Colwell  Legacy