Bertolini Sanctuary® Seating is excited to be building a new style of church chair to be used by Christ Church of the Valley in their Rancho Cucamonga, CA satellite location. Take a look at this video showing state-of-the-art Church Chair Manufacturing using CNC bending. The CNC bender extends our capabilities with a true mandrel bending and the added benefit of interpolated bending. Mandrel and interpolated bending prevent crushing the steel tube as the legs are manufactured and result in a stronger and better looking steel leg. Lower quality manufacturers use crush bending because it is a less expensive process.