Thanks to my knowledge gained in practice, I can say that these aluminum rods are a game-changer. The rods were very easy to use, and the end result was impressive. They created strong and durable welds, and I found them to be suitable for a wide variety of industrial purposes. The only downside is that they are a bit expensive, but given their quality, it's well worth the investment.
I've tried several aluminum "welding rods". They really work. The snow/ice slid off the roof of my shop and broke the cast aluminum bracket that holds my gooseneck lantern to the side of the barn. The wire stripped the paint from the mount, placed the parts in a vise, heated them and the AlumiWeld snapped into place and the mount was as strong as ever. The light is back on.
Works great if you follow the instructions! Thoroughly clean the surface, heat quickly, once the desired temperature (+750Β° < 800Β°) is reached, move the rod back and forth or in a circular motion to remove all oxidized aluminum from the weld area. You will see the dark gray molten slag evaporate and begin to turn bright silver. Once that happens, fill in the weld and go. It won't break, it needs to be cut. I used it to weld an entire enclosed aluminum trailer. They work great!