This is the pattern used to yield the cooper alloy flywheels used in the Hit and Miss Engine. This pattern is a 2-up pattern meaning that it will yield two flywheels in a single pour. This is very important for reducing the cost of these flywheel. Cooper alloy is more difficult and takes much long to pour than aluminium.This pattern is 34.5 cm (13.58") x 57.5 cm (22.64") x 4 cm (1.57") We can product custom patterns for $60 hr design time and $.25 per gram for 3D printing. If you want us to install the pattern onto a match plate, that will be an additional $40.