Need some advice. I am embarking on using aluminum tubing for the trike I am building plus 4130 tube bending for my 69 vw that i am converting into a trug which is a bug truck with some baja fenders so i guess its also part off road bug. Anyway I will be using various sizes of tubing. I have bent 1/2 in aluminum using the fill it with sand and a jig. That worked ok but this is bigger stuff. Most all bend will be 90 degrees or less.