Cement board typically finds a use in building product such as underlayment for floors, substrate for wall tile, or for building siding. It is a moisture resilient, flexible, strong material perfect for construction.
A saw is often brought to a job site to cut away at a cement board. In a factory, waterjets are ideal as the cement board is in an uncured state. This allows for complexity with the cut if a preferred shape is desired. Not only that, the waterjet can be included into the manufacturing line before final curing occurs.