It Worked for Me: Curly Koa Sides

by C.F. Casey

Originally published in American Lutherie #114, 2013



Recently I was faced with the gnarliest set of curly koa sides I’ve ever worked with. I was building a custom tenor ukulele, and the client had personally selected the woods. After thinning the sides, I gently flexed one to check its stiffness, and the darn thing broke!

I was able to glue it back together, but I was sure that in the bending process the glue would soften and it would fall apart again. So I installed another clamp bar on my bending form, just at the point of the break, clamped the sides down securely at that point, and proceeded to bend outwards in both directions (Photo 1).