A rotating compost bin makes it easy to frequently turn a hot compost pile. By continually introducing air into the pile in this manner, you can turn compost material into humus more quickly than you can with a cold compost pile. There's no reason to invest in an expensive commercial hand-crank tumbler. A wood or plastic barrel at least 55 gallons in size with a lid can be converted into a rotating compost bin that is just as effective as any commercial model.
Remove the barrel's lid and thoroughly wash the lid and the interior and exterior of the barrel with soap, water and a stiff scrub brush. Rinse the barrel clean with a stiff spray from a hose.
Drill six to nine circumferential rings of holes spaced 6 inches apart. Space the rows evenly so that the compost is evenly aerated from top to bottom.
Fill the compost bin three-quarters of the way with compost material and fasten the barrel's lid. If the lid does not fasten securely, use a bungee cord around the length of the barrel to hold the lid in place.
Turn the compost barrel on its side and roll it across your yard a few times a day. The more often you turn the barrel, the more quickly its contents will turn to humus. The process should take around 10 weeks.