Had some thoughts in a thread of mine, think it is worth pursuing. More to think of. Just looked at tops from one vendor, for a ukulele sized top, 16" x 5 1/2" for a princely sum of $5. The Martin size five is 10 3/4" wide. Might narrow it down a little. Also allow for six inch boards which are just shy of 5 1/2" in home centers. Just did some measurements. A 16" body length dreadnaught shape would need just shy of 24" sides.