Today’s Mystery Tool Construction Know HowNovember 25, 2015 . How To Put The Curve Into Guitar Frets Dan Erlewine demos the StewMac FretBender. This great idea came from luthier Randy Stockwell in the 1980s, and now it's a must-have tool in guitar shops everywhere. . . Pages: 1 2 Sharing Twitter0 Facebook0 Google +0 Linkedinactive){li-icon[type=linkedin-bug][color=inverse] .background{fill Email this article Print this article Tags Guitar Fret Bending Tool