ABSTRACT
This chapter discusses the design of a manufacturing experiment involving both main effects and interactions. The problem selected for exposition is the reduction of solder joint defects in the wave solder process for component attachment to an electronic circuit card assembly. The generation of arrays is of great interest to some experimenters but, paradoxically, it is not terribly relevant to the successful use of design of experiments(DoE). Success can be attained by applying the arrays correctly, even with little understanding of how they are generated. Like a good building project, a good DoE project must have a good foundation to be successful. In order to build a good DoE foundation, all the relevant information must be made available. Seldom is there sufficient knowledge, experience, and judgment present in the mind of a single individual to bring all this information to bear on a problem.
