18" x 18" Hobby Vacuum Former Hobby Vacuum Former forms plastic sheets 18" x 18" up to 1/8" thick (15 3/4" x 15 3/4" usable area) Make your own prototypes, custom packaging, RC car bodies, or model rocket nose cones Create custom molds for plaster or concrete, chocolate and candy, candles, and soap making Includeds detailed, step-by-step instructions along with sources for vacuum formable plastics Requires house hold oven and Shop-Vac style vacuum cleaner with 1 1/4" hose/adapter