Michael Louris, Principal Tooling and Process Engineer, Microsoft. It was a hot summer day in August 1987 at RKO Tool Corporation in Shoreview, Minnesota. I was finishing my first one-cavity mold after graduating from Hutchinson Vo-Tech College, where I received a degree in tool and die making, majoring in moldmaking. After 10 weeks of work, it was finally done, well, almost done. The only thing left was grinding the vents on the parting line.