Not all wire wheels for a 4 inch angle grinder are created equal. Or I should say created the same. I’ve encountered 4 types: Cupped braided, cupped unbraided, flat braided, and flat unbraided. Since the cupped wheels spin in a smaller circle, they usually are less aggressive. Unbraided is less aggressive than braided, so the cupped unbraided is the least aggressive. I’ve heard people say that wire wheels don’t actually remove rust, they merely polish the surface. There is a lot of truth to that, but not always. The nice thing about a wire wheel is that it can conform to, or reach places that other tools won’t; such as around large rivet heads. The wire wheel is a tool I use a lot.
In these pictures, I’m cleaning some bronze mechanical parts, for the sake of appearance. That’s why it’s not necessary to polish the entire piece. In the first picture the bronze piece has been cleaned with the flat braided wire wheel visible at the bottom of the picture. The unbraided wire wheel is mounted on the angle grinder. The next pictures show what a difference the softer wire makes. The braided wheel is indispensable for steel, but not as good for softer metal.
