Siemens Ltd is developing a new range of computer-aided design and manufacturing software products for three-dimensional free form surface modelling. Based on the Romulus Parasolid algorithm library, which Siemens has bought in from Evans and Sutherland Computer Corp company Shape, the tools will be integrated by Siemens with its own Sigraph and Cadis 3D software. The work will take place at a newly establish research and development centre in Cambridge, here, which will employ 20 software experts working on a range of Siemens equipment, including its re-badged Apollo workstations: previously Siemens has carried out all CAD/CAM software development at its West German research centres in Munich and Nuremberg.