Interesting article especially if you sub birch for maple. No mention of how to plug the tree after though?
http://artofmanliness.com/2012/05/0...ed:+TheArtOfManliness+(The+Art+of+Manliness)/
http://artofmanliness.com/2012/05/0...ed:+TheArtOfManliness+(The+Art+of+Manliness)/