How to Open a Bottle of Port with a Feather
We’ve featured projects that demonstrate how to cut a wine bottle once all the wine has been poured out of it, but what about when you need to cut the neck of the wine bottle in order to bypass a deteriorating cork and access the rich, intoxicating liquid it contains?
http://makezine.com/2014/12/03/how-to-open-a-bottle-of-port-with-a-feather/