WilliamsWarn Brewbottler extension knob

thingiverse

This is an extension knob for the stock CO2 / Beer line knobs of the Williamswarn Brewbottler Gen 1 counter-pressure bottle filler. The stock knobs are a bit small and hurt the hands after extended use. The reason to make an extension instead of a complete new knob is to avoid any food safety issues with printed parts. This might work with the Gen 2 Brewbottler but I've not seen the knobs in detail so it is a big maybe. Maybe someone that owns the Gen 2 could confirm or deny this? The fit should be pretty tight in order for the extension knobs to stay in place. The model is in Openscad and dimensions can be tweaked to compensate for any differences between printers. With a good fit the knobs are pretty hard to pull off once installed.