If there’s one material you’re never going to rotomold, it’s glass. But glass artisan Frederick G. Kahl, a/k/a the Great Fredini, has come close. Kahl designed this clever system for molding glass inside of a CNC-milled graphite mold using centrifugal force:
Kahl recently demonstrated his incredible technique at North Carolina’s Starworks Glass, an arts nonprofit, where the video above was shot.