You'll need the right equipment and materials, but I think this fully demonstrates the folly of regulating / banning things, especially things that a would prompt a healthy black market to spring to life. Just think, instead of a still up in the hills 1920's Prohibition - style, you'd have a CAD and small manufacturing operation. The finished product would be a lot easier to conceal and transport, too.
http://www.forbes.com/sites/andygree..._medium=social
Will we ever learn??