Carboy Stopper Clamp

thingiverse

This clamp secures rubber stoppers firmly in place on glass carboys used for brewing. It prevents new wet rubber stoppers from rising up out of the bottle. The clamp glides smoothly into position with a tight grip, providing easy access through the top for airlocks. A cut-out section allows for attachment and removal without disturbing either the stopper or airlock. This model is specifically designed for 6.5-gallon carboys by Northern Brewer, but an OpenSCAD file is available for customization to suit other sizes, such as the 3- or 5-gallon versions.