Just to make it clear, this isn’t advocating one way or another, just sharing my thoughts on this subject as I had done a lot of thinking and reading and figuring on what I want to do for my 79.
Your intentions and goals are likely different than mine to some extent.
I had drawn this up last year, in a similar design to a real paint booth, it would be constructed from 2x3 lumber for the walls (potentially with holes drilled in them to lighten them), 1x2 or 1x3 “trusses” all to be sheeted in heavy plastic. The design is meant to be modular and able to be assembled and disassembled. With considerations to maximizing internal space for the given footprint and attention to good filtering and close to proper air movement,
12x16x8(10’ at the highest) with two 2x2x8 filter stacks in the corners using commercially available booth filters, with two 12” tube style ventilation fans, would be piped to outside. Intake filters would also be commercially available booth intake filters.
The 12x16 size is with the intention of doing the painting as components, not to put an entire vehicle in. That was before I got a four post lift, so I really need to reevaluate and see if that size will work how I want it to or if it might be more better to go bigger.
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