EXPERIENCE: JB Weld is made up of two parts, 1-parts liquid steel and 1-parts hardener. Like most strong epoxy's, you have to combined the two for the product to work. They recommend you use a clean disposable container, I used a sour cream container which I washed first.The first thing you are going to want to do before you make a JB Weld mix, is to prep the surface before application. They recommend you use Acetone or paint thinner to clean the surface, as it will not leave a petroleum film, since I didn't have any of either, I used carburetor/choke cleaner.Since the surface's were already rough, I didn't have to rough them up. However, keep in mind, if you are planning to apply JB Weld to a smooth surface, you should also rough up the surface using a fine grit sand paper as a second preparation step. I began applying JB Weld, with my cheap $1.00 painters brush from the dollar store. I applied the thick compound evenly over the entire area which meshed with the rim.Then using a piece of wood on one side of the rim, and a C-clamp, I clamped the piece on the rim with pressure and left it there for over 24-hours. After 24-hours, the JB Weld was cured and I removed the C-clamp to reveal a very strong bond! I tried to move the piece back and fourth, but it wouldn't budge, its welded like it should be!The nice thing about JB Weld, is that it can be sanded, ground down, painted, after it has been cured. I noticed JB Weld had blooped out the edges after I installed the piece. So using a dremel with a deburring tool, I managed to grind it down flush with the rim.I also used this product to seal a gas leak in the tillers carburetor bowl. It actually did as advertised and sealed the leak, there is no gas leaking out of the carb now!CONCLUSION: While I would not have believed this product could actually weld metal together, I am now a believer. If you don't own a welders kit, or have any welding knowledge, JB Weld, in my opinion, is the best product to get you out of a jam. From what I understand, this product is so good, that even mechanics admit to using it themselves! 5 out of 5!