How do you build a soak tub and tile it? How do you attach the cement board without penatrating the water proofing?

Outside of kits you can build this is the best I can do. Do It Yourself Hot Tubs and Spas Information from Hot Tub adn Spa Info Central, Books, ideas, plans and more (http://www.angelfire.com/mi2/hottubs/do_it_yourself_diy_hot_tubs_spas.htm)
Good luck, Tom