Experimental Musical Instruments

http://www.windworld.com/index.htm

This is a cool link which might be helpful to anyone who wants to
design and build instruments. They even have an online fret placement
calculator. I'm currently in the middle of re-fretting a fretboard to
11 EDO. The guitar will be tuned straight across in "fourths" to give
me 22 EDO, but without all those tiny spaces.

All the Best,

Robin