Carbonation Cap PET bottle

thingiverse

Carbonation cap for carbonating drinks in a PET bottle Ball Lock connector fitting. Put an oring on the top groove. Put a rubber or similar washer inside the cap to seal against the bottle for a better fit. Seen other models but they didn't seem to work well with my ball lock fitting so measured up my stainless post and replicated it Thickened up the base near the thread so it doesnt distort when tightened