Disc cutter

A disc cutter comprising a cutter body 300 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 302a, second 302b, third 302c positions and so on 302d, 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, the disc cutter further comprising a tool holder stabilising system for reducing vibration of the cutting elements during use (fig. 28).