5L Carboy Bung Lock

thingiverse

When my bungs are covered in starsan, they won't grip at all in the carboy, and just sit loosely on top. I was using rubber bands to hold them down, but I figured it would be nice to have a printed part for this. This is for a 5L carboy with a threaded top. It's configured to hold the bung 21mm from the rim. This prints without supports. WARNING: IF ITS POSSIBLE FOR YOUR BLOWOFF TUBE OR AIRLOCK TO GET BLOCKED, THE BUNG BEING BLOWN OFF CAN SAVE YOU FROM AN EXPLODING CARBOY. LOCKING IT DOWN COULD REMOVE THIS SAFETY FEATURE. USE AT YOUR OWN RISK. Personally I use this for a day or two, just until the bung dries and then stays in place. I included a simple "fit test" print, so you can check if this profile will fit your carboy+bung setup.