Just a perfect little tool. just a few twist and the end of wire is smooth. Perfect if you make your own earring findings.
N'est pas efficace
I decided to finally break down an buy a cup bur for my wire work. I was surprised at the size of the actual cup (even though I knew it would be tiny), but when I tried using the tool, it work fine to round out the sharp edges of the wire I was cutting. I would recommend it for anyone who works occasionally with wire. For me, it was inexpensive and does the trick. I also appreciate that it came in its own case (not so easy to misplace).
I have really tried to like this tool but it just doesn't work for me. I read another article where someone was having a hard time and they took the end piece and hooked it up to their Dremmel and now they love the rounder. I will have to try it.