These are just a couple of my projects. I Wanted to build a sand 
rail so first I had to make a bender. 

The first bender was made from gate rollers and only lasted a few
bends before it broke.

I modified it and made new steel rollers and made it highly adjustable.
 
It worked really well but doesn't make the most beautiful bends. 

All you need to build it is a lathe and a welder. 

The sand rail is nearly complete and has been alot of fun building. 
I plan on building a four seat rail after I am done with the two seater. 
I am also build and better bender. Its a rotary draw bender.