Wayne Parham Messages: 18784 Registered: January 2001
Illuminati (33rd Degree)
Don't skimp on the bracing. The suggestion of every 18" should be considered a minimum, or rather a maximum span of linear board that should be allowed without being braced. Cut braces to fit snugly but not so tight you need to beat them in. We want to support and preload the panels, but not to bulge them out.