Hello people.
I have been considering buying me a "JD2 Model 3" bender for a while, but I think I will make one my self. What plans should I go for? And witch plans are most similar to the JD2 bender (http://www.jd2.com/)?

Is this a good bender? It can bend the same square and round tube that JD2 ca.

http://cgi.ebay.com/Air-Hyd-Tube-Ben...QQcmdZViewItem

http://www.gottrikes.com/Tube_Bender.htm

Anyone with experiense that can give me an advice?