Bill Rainford, a Professional Joiner modified the FORMUFIT Paint and Spray Booth plan to create an inexpensive varnish and paint booth for his woodworking projects. Bill customized the Spray Booth with his own unique touches, including a filtration system and custom fan enclosure from 20-inch box fans.
You can see the build in his blog over at the home of Rainford Restorations as well as a time-lapse video of the construction and assembly of the project below.