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That sounds like a flapwheel to me.

You really need a flapwheel in a higher grit than either of those. Those are too aggressive and won't allow you to work in the curves of a straight.

Most people used flapwheels on the dremel for that kind of work. They are available in many grits. They are basically small pieces of sandpaper mounted around a cylinder. They are available at...

You need a separate felt wheel for each paste. Don't mix them. You'll also probably need several wheels for initial cleanup because they get pretty grungy. I've never tried to clean one, just...