I am new to the commercial forums so please feel free to let me know if I get things mucked with my posts (!) I am a lil one man band operation making limited run CNC machined thumb rests designed for "easy on easy off" and make no holes in your bass! The one I make for the Rickenbacker 4001 and 4003 has gone over really well, and now have one for the 10 hole pattern Fender Jazz Bass. I am looking for information on other models like the other Fender Jazz patterns, Lakland, and have Music Man Stingray version in the works. http://www.zero-mod.com You can see my Ric and Jazz rests on Troy Hughes basses on You Tube!