It is the heart of a Paper / Board machine. It controls stick flow, pick-up on the felt and is responsible for good single layer / multi layer formation and substance profile across the full web. It also contains C.I. Spiders with S.S. strip and wounding S.S. 304, 10 gauge wire. It is also duly balanced. The principle of the cylinder mould is to provide the forming surface through which water drains to leave the fibres matted in a sheet. The cylinder is designed to allow drainage uniformly across its width with no turbulence to disturb the fibres during formation. Sheet formation cannot be improved later in the paper making process. It is produced once and for all on the cylinder mould.