David Lewis Manhattan Forge Dining Chair with ArmsDavid Lewis Manhattan Forge Dining Chair with Arms The Manhattan Forge Dining Set is reminiscent of the Open Forging Method, which uses the application of pressure to create a wide variety of shapes by bending and contouring material. We have used this same industrial technique, using poly lumber, to create the unique look you see in this line of outdoor furniture. Using the Open Forge technique allows us to create a truly unique style that is both