Well, the wheel is still attached. Removing the rust & set screws did not help. The thingies (don't know the technical term) that the wheel and turnshaft (?) fit onto do not come off. They are not screws. DH thinks they were tapped in. We don't want to force anything and break the cast iron. So we're moving ahead. Have finished sanding and removing the sanding/rust dust. Taking a break - still getting over a bad cold - and will resume in another hour or so. Planning on two coats of flat black and one coat of glossy black Rustoleum.