I had a bunch of scrap pieces of 1/4 luann plywood so I made my own and framed it up with 1x2s. I put an old storm window on the top and set lights up there to shine into the booth. I also have a track likght on the front. I have not yet installed a fan. I do wear a respierator (a "good" one from the hardware store) when I paint. I hve been using more and more acrylics so not so smelling and I have hot water heat so there is no air flow out through the house.
I have look at the ones for sale and all I have seen are too ssmall for O scale. they are HO sized and not long enough for a big engine or an 80 ft (21 inch) passenger car.
If you find one that is big enough it should work. You want to keep the spray contained and you want it well lit. Air brush spray is a lot less volume than spray cans by the way.
