My metalworking skills are non-existant, so I signed up for the SportAir "Vans RV Assembly" workshop at Oshkosh. It was a fabulous two days, and I got a crash course in the tools and techniques that are used in Vans RV construction. I also learned just how easy it is to really screw up a sheet of aluminum. I'm certain that I'll learn many more ways to screw up aluminum as i go.