Electric Guitar Jack Wrench

thingiverse

This is a handy tool for tightening the 7/16" nut that keeps the amp jack secure on many electric guitars. Use your fingers or position the slot to grip a flat head screwdriver, allowing you to turn the wrench with ease. This solution is also effective for jacks that have slipped into the guitar body when the nut comes loose and falls off. You can carefully remove the jack from the body, then secure it in place while re-threading the nut by inserting a thin wire or hook through the screwdriver slot and down the center of the wrench. \n Sketchup makes the process simpler, while Printrbot Simple handles any trial and error you encounter.