ArtMetal

Depending on the size of stock you are rolling, its going to be difficult to mind numbing. Of all the tools I have made, the ring roller is the most curse inducing. My advice, get a boss bender if you need heavy stock bends. Make sure its got the acme thread adjustment. A small bender can be made for thin stuff but you can go to harbor freight and buy one that will handle 1 inch by 3/16 for about 50 bucks. The biggest boss bender will handle 2 by 1/2 if memory servers. It runs a little over 600. Its the gearing that gets you on these things. My vote, spare yourself the agony, buy one.
Trenton Tye
Purgatory Ironworks