Re: Magnetic Capo?
What if you took the aluminum-instrument route and had a one-piece body and neck with a steel plate directly inside the neck? It would be tough, durable, and you wouldn't necessarily foul up the fretboard. Pop your rare-earth-magnet capo bar on top and be done.
"When I heard what Socrates had done on the lyre, I wished indeed even [I had done] that...but certainly I labored hard in letters!" - Cicero, "Cato the Elder on Old Age"
Mastercraft MSF400 F-style mandolin
Late 19th Century Ferrari(?) Bowlback
No-name, early 20th Century British Mandoline-Banjo
1960s Harmony Baritone Ukelele
The Magic Fluke Flea Soprano Ukelele (in 5ths!)
1910 German Stradivarius 1717 copy, unknown maker
1890(?) German Stradivarius 1725 copy, G.A. Pfreztschner, maker