Just wondering what the minimum diameter of a log would be to get any usefull material out of it(for guitar or bass)? I managed to get my hands on a walnut Log (14.5"D/8.5'L)and 2 sweet peices of spalted alder(12"D/30"L, 14"D/30"L) off of a construction site that was clear cut. Yeah so what diameters are good for what? Just want to know if should keep these around for a future project or give them to a couple neighbours who turn wood. I may run into the opportunity to get more wood off of sites. What diameter should I look for if I wanted to do book matched guitar or bass tops? Thanks.