A company called Helisys (which was succeeded by an organisation called Cubic Technologies) created laminated object manufacturing in 1991. Helisys fused sheets of material together before using a digitally guided laser to cut out the desired object, although they ended operations in 2000. Brothers Conor and Fintan MacCormack developed the original process in 2003 by using standard office paper and an inkjet printer to print the designs. The paper was then built up layer-by-layer before a tungsten blade is used to cut away the waste paper to reveal the final object. The MacCormack brothers commercialised LOM through their company, Mcor Technologies, which continued to develop the process by using CMYK colour to print more vivid objects that could be used for promotion or visual prototyping. This new process was developed so that sheets of paper were colour printed before being selectively glued and cut. In this process, known as selective deposition lamination (SDL), the adhesive is only applied to the areas that correspond with the design, making the final object easier to cut from the waste material.