Design for a waste oil filter that uses an oil drum, faucet fittings, nylon stockings, and a bucket.
ILLUSTRATION: MOTHER EARTH NEWS STAFF
LEFT: The oil runs through nylon stockings clamped to the spigot. MIDDLE: Cleaned oil is poured into your stove or furnace's reservoir. RIGHT: Filtering removes grit like this from the system.
MOTHER EARTH NEWS STAFF