Bending Iron — Lutherie Encyclopedia

Bending IronType: toolA heated pipe used to bend guitar sides, bindings, and linings into the curves required for acoustic instrument bodies.## Description A bending iron is an electrically heated cylindrical pipe, usually made of aluminum or steel, mounted vertically or horizontally on a stand. The pipe diameter is typically 60mm to 80mm, and the surface temperature is controlled by a thermostat or variable controller, usually set between 150 and 175 degrees Celsius (300 to 350 degrees Fahrenheit). The smooth, heated surface allows thin wood strips to be gradually bent to shape by hand. ## Use in Lutherie The bending iron is one of the most iconic lutherie tools. It is used to bend the sides (ribs) of acoustic guitars, ukuleles, mandolins, and other stringed instruments into the complex curves required by the body shape. The wood is dampened, then pressed against the heated pipe and slowly formed to match a template. Bending irons are also used for bending binding strips, kerfed linings, and purfling around tight curves. The process requires patience and a developed feel for when the wood is ready to yield. ## Selection Guide Look for a bending iron with accurate temperature control, as inconsistent heat leads to scorching or cracking. The pipe should have a polished surface free of pits or rough spots. Stew-Mac, LMI, and Summit all offer quality bending irons. Some have interchangeable pipe diameters for different curve radiuses. Budget 80 to 200 dollars. A bending iron with a built-in thermostat is strongly recommended over uncontrolled models. ## Tips - Always wet the wood thoroughly before bending. Some luth…