a sheet of foam board, and a set of three remote-operated self-adhesive puck lights. They also trimmed ... observers will ...

The booth is built from a single 40″ x 60″ sheet of 1/2″ foam core board, a furnace filter, and a vent fan modified to fit his shop’s system. The whole thing cost less than $200 ...

If you follow the path of light, it's approximately Z-shaped. 1. Cut foam board to size. 2. Assemble a four-sided chamber by alternating the placement of the 3 x 15-inch and 3.5 x 18-inch pieces ...