I bought the $59 software, then upgraded to the 3d.. now upgraded again to the SE version..

Tubing software that lets you design, then writes out the distances, the angles, the simplicity of it all.. Just put it on the marks, index it, and bend.

http://bend-tech.com/forum/viewtopic.php?p=395#395
and they have a forum for tech support.

I'm tickled, hope to build 100 gocarts/minbikes by christmas.