A forged heatsink is manufactured by using a modification of process called cold forging. Cold forging uses high pressure and low temperature to ensure no air bubbles in the heatsink body, or other impurities are trapped in the material. This improves the thermal properties of the heatsink, and increases the density of the material. ACG Cooler utilizes special die tooling and intense pressure to produces high precision heatsinks with high aspect ratios. A forged heatsink is typically manufactured as one part at a time, and can be made from AL 6063 or C1100 normally. Aspect ratio up to 35:1 are feasible, and no draft angles required on fins. Fins can be round, elliptical, straight or any combination on the same part.