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1. A wood chipper comprising a chamber, an inlet to said chamber for receiving wood material into said chamber, an inclined chute for gravity feeding wood material toward said chamber inlet, a flywheel rotatably received in said chamber, at least one knife attached to said flywheel and having a blade disposed on one side of said flywheel which faces said inlet to said chamber for cutting the wood material to form chips of the wood material as said flywheel is rotated and as the wood material is received in said chamber, wherein said inclined chute has an outlet which is located short of the flywheel, the wood chipper further comprising a cylindrical anvil, wherein said cylindrical anvil is disposed between said outlet of said inclined chute and said flywheel so that the wood material is movable from said inclined chute over said cylindrical anvil to said flywheel, and wherein said flywheel includes a plurality of plates laminated together and wherein said plurality of plates of said flywheel includes a first plate and a second plate, wherein said first plate has at least one first slot extending through said first plate, wherein said second plate has at least one second slot which extends through said second plate and which aligns with said at least one first slot to define at least one passage through the flywheel for chips cut by said at least one knife, wherein said second plate has at least one tab which extends from an edge of said at least one second slot and which is skewed relative to said second plate so that it extends partially into said at least one first slot, wherein said at least one knife is attached to said at least one tab whereby said at least one knife is skewed relative to said first plate, and wherein said blade of said knife is disposed outwardly of said first plate.
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