AutoTecknic Dry Carbon Fiber Gentleman's AshtrayThis is AutoTecknic real dry carbon fiber ashtray, perfect gift idea for someone who smokes cigarettes or cigars or just simply loves carbon fiber. Dry carbon fiber is made in a pre preg and dry process which consists of vacuum forming sheets of carbon fiber into a mold at temperatures around 350 F, sometimes referred to as an autoclave. This process allows carbon fiber to form into a strong and lightweight composite. Like most race car parts.