An important architectual detail such as a rounded turret should have curved gutter, instead of short pieces cut and soldered together. Our radius gutters are sold in 7’6″ sections. Ogee, 1/2 round and box gutter can be formed in 32 ounce copper and then curved to your specs. Inside or outside and even vertical radius can be formed. Materials available are aluminum, copper, and steel. See curvedgutters.com to order.