Disc cutter

A cutting assembly comprising a disc cutter, the disc cutter comprising a cutter body having an axis of rotation, a plurality of tool holders and a plurality of cutting elements, the tool holders and cutting elements arranged in at least one set about the cutter body, each set comprising a plurality of tool holders arranged in first, second, third positions and so on, said positions being in sequential order one behind the other in the direction of rotation, each tool holder supporting one or more of the plurality of cutting elements, the cutting elements being provided in a pre-determined sequence of configurations from first position to last position, wherein in the pre-determined sequence of configurations the quantity of cutting elements and/or the lateral spacing of the cutting elements varies (figure 8), the cutting assembly further comprising a dust reduction unit for reducing the transmission of dust generated by the disc cutter during use, wherein the dust reduction unit comprises a dust exhaust manifold 2000 for carrying dust away from the disc cutter, the tool holders and cutting elements successively passing through a slot 2032 in the dust exhaust manifold as the disc cutter rotates