from the Russ Fairfield web site:
a shellac based friction polish can be mixed from equal parts of shellac, denatured alcohol,
and boiled linseed oil. Add a little beeswax, about a teaspoon full to ½ pint of finish.
Heat the wax in the microwave to soften it before adding it to the finish.
The oil will not mix with the alcohol, so you will have to keep it stirred