From the Official Luthiers Forum!
Full-scale plans for building an OM-style acoustic guitar.
Many guitars have been successfully built using these complete full-scale plans from the library of the online Official Luthiers Forum. Drawn by Michael Payne, each set of four 48" x 36" plans includes specifications for a bolt-on neck, 25.4" scale, optional X back bracing, and optional body cutaway.
OM-style body dimensions:
15" lower bout, 11-1/4" upper bout, 4-1/2" deep, 19-5/16" long
Drawn by Michael Payne.
Set of 4 pages, supplied folded.