Mather & Platt has established a reputation as a leading exponent of CAE in the mechanical engineering sector. This paper demonstrates the increasingly important role of solids modelling in the field of engineering design, highlighting its application as a design visualisation tool. A number of case studies are described to illustrate the variety of work pursued in the two years that this new facility has been in productive use at Mather & Platt. In contrast to the visually impressive products of solids modelling and the advantages to be gained from its successful exploitation, some of the pitfalls and problems experienced are also cited.