I am in the process of making cab top bows at work in my spare time. Mr. Brute4c has graciously loaned me one of his originals as a pattern. I have acquired the correct material, specifically 16 gauge, electrically welded tubing, one inch OD.
I decided it was easier to put the broad bend into it before the sharper ends. I used a 1 inch manual die roller assembly (not sure what it is called) and pre-bent all the stock.
Here is some laying on the workbench at home before the ends are bent. I left the others at work today that I bent the ends on. Will get them home tomorrow and get photos.
If any one wants some of these, let me know. I'd like to get an idea of how much material to get.
Scott