Nail polish remover is acetone based... Go to the nearest drugstore and buy a bottle of acetone... because it is very usefull for a number of things: cleaning epoxy off brushes (works like a charm), thinning epoxy (only with slow curing types, otherwise the acetone gets trapped in the cured epoxy and then it takes weeks to cure), degreasing things before you glue them (very effective), cleaning your planes (but first make sure your finish is acetone proof!), adding it to your fuel (1-2% as ignition improver), ...