How to Needle Felt

Just a video tutorial I found for myself on how to needle felt. I am trying to needle felt some buttons for my project and then I am doing a little creative caffeine on how to harden them and make them work as a button as well as what I can do with fur in general.

http://www.youtube.com/watch?v=wcfbgtyrz2U

I want to try using milk-based polymers to see if that is a natural hardener for the wool. I am thinking I can use it as a bonding agent and hardener for the fur and then mold it into a button shape. (http://www.hometrainingtools.com/article.asp?ai=1229&bhcd2=1266292360 how to link)