Food Dehydrators & Paint Dryers in Model Building Questions and Answers Posted July 10, 2012 I finished my drying box and got it calibrated today. I used 1/2" plywood. It's about 14" wide x 12" deep and 20" tall. I bought 2 receptacles and wired them in with the dimmer switch to be able to vary the amount of heat I'm putting into the box. I lined the box with some quilted material that is aluminized on one side. Had it left over from the Cobra I built a few years back. With the lining, I found I really only needed a single 60W incandescent bulb to generate enough heat to maintain 105 degrees. Here's a few pics.