Part 2
Out in the garage, cut a piece of plywood larger than the fan unit and cut another hole in the middle to match the metal pipe coming through the wall. Place a bead of caulk around the flanges of the metal tubing and screw the plywood in place being sure to hit the studs. The plywood should be tight against the flanges pinning the pipe in place
Screw the fan unit to the plywood and place a bead of caulk around the edge to seal.
I used foamboard insulation to cover the fan unit and keep what little heat I have inside my office. Just cut to fit and put it together with duct tape. You can either remove it when the unit's running or cut flaps that you can open up.
Put a strip of filter material over the holes in the Rubbermaid and bend the metal strips over to hold it in.
To hold the plugs I used a variation of the epoxy drying system I used in the garage. One side has a slow turning motor with a sewing machine foot pedal to move the plugs as needed
The other side has a ball bearing swivel attached to a cup hook using a piece of rod with hooks bent onto each end. The plugs are just daisy chained together using the same hooked rods.
Both end pieces are held onto the bench by clamps. The entire unit can come apart and be stored inside the Rubbermaid.
Sooner or later I'm going to get my hands on an old computer power supply and fan and will rig this thing to remove all the epoxy fumes as it's curing. The fan unit attached now draws much more air then is required and would suck all the heat out into the garage (which would not be a good thing).
The curing plugs are be protected from dust simply by putting the top on the Rubbermaid container.
THIS IS NOT FIREPROOF - it's only used for spraying water based acrylics.
The fan is 3' from the garage door. During warm weather the garage is left open to vent, in cold weather flexible pipe vents it under the garage door. Another way to do it would be to use a portable assembly that fits in a window. (wouldn't work for me as it would be blowing paint dust right on our tomato garden).
I've been using it for two years now and so far I'm very happy with it.