ESDU 01002 will assist users of the wide range of ESDU documents on the design of cam mechanisms to employ them to best advantage. It provides a brief outline of cam design, identifying the major stages of the process which involve: specification of the technical objectives, selection of the mechanism type to meet those objectives, evaluation of the primary component dimensions to achieve the required follower motion, performance analysis of the final design, and assessment of the final results, At each stage of this design and analysis process those ESDU documents of relevance are referenced. Also included is a list of common causes of failure of cam and follower mechanisms together with their symptoms and a set of remedies.