This chipper/shredder is designed for dry material only. Never place green material or bamboo into chipper.
The maximum branch thickness that can be chipped is dependent on the type of wood and the quality of the goods being cut, but never thicker than 1-1/2" in diameter. For hard wood (e.g. oak/beech branches), the maximum branch thickness that can be chipped is less than for soft wood (e.g. pine/spruce wood). For dry or knotted wood, the cutting thickness may also be less.