The restoration of a 1935 Martin D18 continues with Gruhn Guitar's restoration ace Andy Jellison. In this second phase of the restoration, Jellison removes the pick-guard, repairs damage to the wood on the guitar's top and neck and then performs a delicate neck set. But with the best in the repair business under one roof, the duties and the projects get evenly split. That's why a 1923 Martin Mandolin ends up on Bill Baldock's workbench. He takes the instrument through a standard set up and fret job, but really demonstrates his talent when he seamlessly removes a hole in the mandolin's maple back. Also, George Gruhn himself discusses his philosophy of stringed instrument restoration and explains what he means by the repair specialist remaining invisible.