Bottle Cap Jig Knobs Serge Duclos AW140, DIY, Jigs, Jigs and Fixtures, Plywood, Techniques, Tricks of the Trade, Workshop Tips Bottle Cap Jig Knobs I’m always trying to use up scraps and stuff that would otherwise end up in the trash. My latest devices are jig knobs made with plastic bottle caps, which have a grippy surface on their edges.… Source Read more Comments Off on Bottle Cap Jig Knobs