Oh, something I’ve started to use quite a bit is this:
They are four-way buffers that can sand supports nicely, then progressively polish them down, even to a shine. They are also available at beauty supply stores like Sally Beauty.
I took a silversmithing class and they gave them away as part of the class kit. I’d been buying larger sets of emery boards for jewelry…this particular buffer has the perfect assortment of grits.