Thank you all for the kind words. This is my type of therapy working with metal The key is patience and not rushing.
I have done about a half dozen of the standard square RBM tank and in cases where I have to take off the brass portion that attaches to the carb I will solder that back on in place on an extra power head that I have. But as far as the bottom and top of the tanks I assemble and solder that off the motor.
As for lock lip on the tank above. I started out with my first bend using a brake. I bent it as far as I could with the brake. then finished with placing the piece between the 2×4 and long flat I-beam that I using for metal shaping. Once the first bend was completed I than took a 1/4" piece of bar stock the length of the piece and laid that down equal to the depth of the locking lip and clamped it in place.Then I used the bar stock as a dolly and using various body hammers to bend the lip to a 90. Then I removed the bar stock and put a strip of metal the same thickness of the tank and continued to bend the lip over, Once finished with both sides I then put it in the english wheel to smooth out. Keeping the strip of metal in place to keep the gap at the proper width.
Thanks
James
KIMG0298 by James From, on Flickr
KIMG0301 by James From, on Flickr