All of the 14 gauge rings (in the back) fused. But they are too chunky for me right now. (Soon to be hammered and become some stand-by necklace or earring element.) The rings in front are 18 gauge wire, I then hammered them with one or two strikes. The ones that didn’t fuse broke right apart at the seam. The others…usable, but OMG they weren’t perfect on my first try! (Ha ha) If I had tried 20 gauge, it would have melted for sure. Yup. The 16 gauge will be the one to try. Practice should help too.