00:00So about a year ago, I was grinding up concrete in a client's basement, and I was covered with
00:05dust from head to toe, even though I had the grinder hooked up to a shop vac, and I was
00:09wearing a mask respirator. So I decided to make my own air scrubber, which is this item that you
00:15see right here, which is a box fan mounted on four furnace filters to form a cube. And as the
00:21fan is
00:21going, it's actually pulling the air through these filters, just like your air filter in your furnace
00:25would do, and it's capturing that fine particulate dust. So if you are in one of those situations,
00:31you need to mitigate that dust. You can certainly make one of these for less than $70.
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