This causes erosion problems. This only causes fire scared rocks and possible exploding rocks. Tinder is the smallest, the thickness of a wooden match or thinner. Kindling is the next size. It ranges in thickness from a wooden match to finger width.
Fuel is the largest size.
Fuel sizes are finger width and larger. Knowing what type of wood to use is also important. Softwoods such as pine or fir burn rapidly. Hardwoods, such as oak, maple, and hickory, burn more slowly, providing a longer lasting bed of coals. Hey Counselor, Don't use Mountain Laurel, Rhododendron, or wood with poison oak or poison ivy, as health problems may occur with the usage of these woods.