From the Official Luthiers Forum!
Full-scale plans for building a medium jumbo acoustic guitar.
Many guitars have been successfully built using these complete full-scale plans from the library of the online Official Luthiers Forum. Designed and 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. The small and medium jumbo guitars feature a contemporary shape that has proven popular with Forum members.
Medium Jumbo body dimensions:
16-1/4" lower bout, 12-1/16" upper bout, 4-3/4" deep, 20" long
Designed and drawn by Michael Payne.
Set of 4 pages, supplied folded.