That sounds interesting where did you get that. I was considering using Pet caps and fitting a Bike valve to charge a bottle. But I still would need a Co2 bottle valves Regulators etc.
I place a couple of long necks in the fridge of a morning and a fe hours later the beer is chilled. Presently a Munich Lager 4 weeks in the bottle. Forgeting labour it only costs me $12Aud / batch 30 bottles 720ml(Long Necks).
If I do not get a big improvement by letting the beer settle in a secondary container for 2 weeks I will look into carbonating.
Thanks for reply