Finally registered

Hello.<br>I've been watching videos on the slingshot for a year and a half now but I never bothered to register on the forum.<br>I like slingshots but I never knew how to make good ones.<br>We usually used a rubber from teared up bicycle wheel.<br>It's strong but not efficient.<br>Now I bought some kind of slingshot but rubber is crappy.<br><br>Anyway does anyone know where is that video where it is explained how to cut that thera band and make a good rubber for a slingshot out of it?