Copyright © Thomas Fetter
2014-2016
Here are the design drawings for the spray booth...
Paint Booth - Design Drawings
I choose 8'x8'x7' tall for the dimensions of my paint booth - large enough to accommodate most rockets when broken down into two or three sections, and small enough to fit into one bay of a garage. The air flow enters from the "front end", and exits on the "back end". The door is on the "front side".
There are four side panels and a top panel. When not in use, the panels can be disassembled and stacked flat against the wall, taking up minimal space in the garage. The panels are assembled with 1/4" bolts and t-nuts.
The front and back end panels overlap the ends of the side panels. The detail shows the bolts used for assembly/disassembly.
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The front panel includes the door. The door opens out so that the suction of the fan pulls it closed.
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The front end panel includes the air inlet. It is framed with 20"x20" squares to hold the air inlet filters. I use standard 20"x20"x1" furnace filters for the air inlet. I used 1/2" hardware cloth on the inside held in place by screws and fender washers, but rather than the firing strips as shown in the drawing, I simply taped the filters in place from the outside using duct tape.
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The back end panel includes the air outlet. It is framed with 20"x20" squares to hold the air outlet filters. I use standard 20"x20"x1" fiberglass paint filters (see "air" section). The outside of the frame is covered with 1/2" hardware cloth and the pre-cut fiberglass filters just press in and stay in place by friction.
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The back side panel has no special features.
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The top panel also has no special features.
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The plenum to interface the spray booth outlet to the fan is mace of 1/8" Masonite. The internal baffles ensure even air flow across the width of the spray booth. See the assembly pictures for more details on the construction.
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This shoes the detail of how the booth, plenum, and fan housing interface. The back end of there booth is on the left, the plenum in the center, and the fan housing inlet is on the right.
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