Sanded Down Shim Layers

Once again I flipped the belt sander belly-up, and sanded the edges of the shim layers of the horseshoes. The shim layer is not glued to the other layers. I don't plan to glue it at all so it can be painted (silver) separately from the other layers (white). I still need to do some light sanding here and there on these shoulders to even them out. There are areas that rise and fall just a bit along the edges.