Things You'll Need
Instructions
Decide what you intend to do with your slot cars: race in public, race at home or race on a small toy-store set.
Race at a public track with 1/24 scale. Most public tracks use that scale, which is 1/24 the size of a real car.
Race on a home track with 1/32 scale.
Race on a smaller, child's set using the smallest scale, HO. HO sets, the most familiar kind, are sold complete with the track - usually in toy stores.