A corrugated skateboard deck and method of corrugating skateboard decks in the skateboard deck manufacturing process. The light source includes a light emitting diode that emits a first component of ultraviolet light, and a UV laser light source that emits a second component of UV light having a peak wavelength different from a peak wavelength of the first component of UV light. The water heater also includes a second controller that is selectively coupled to the first controller and configured to communicate the first threshold value to the first controller, and perform an additional function related to the operation of the water heater.