In this video, Robert O'Brien of O'Brien Guitars tackles cracking of the finish when wet-sanding the peg head. When moisture enters the end grain of the wood, the wood expands. When it dries, it contracts, and the finish cracks as a result. Robert uses Hot Stuff Original Thin CA glue to seal the end grain prior to finishing so that moisture cannot get into the wood when wet sanding.
Who is Robert O'Brien?
Robert O'Brien of O'Brien Guitars is a master luthier who not only builds custom guitars but also teaches lutherie classes in his shop and at the Colorado School of Lutherie in Denver as well as online classes. In addition, he created several instructional DVDs and regularly releases new videos on the O'Brien Guitars Youtube Channel.
Read more about Robert "Robbie" O'Brien in the Bio section of the O'Brien guitars website.