Aluminum Foundry near Seattle, WA. Aluminum castings by Pentz Cast Solutions AKA Pentz Design Pattern and Foundry. Pentz is an aluminum casting foundry, provides rapid prototyping, rapid tooling rapid casting and production tools. Pentz has expertise in advanced casting and tooling design for rapid prototypes, production tooling, short run production parts and high volume production casting. Pentz offers cast aluminum design and engineering, rapid prototyping, rapid prototype casting tooling, production molding process and secondary operations and assembly.