The results of this work clearly show that the improvements
that were carried out resulted in an improvement in
the quality of hole being produced. It is now possible, by
utilising this technique, to produce reverse tapered holes
and more consistent parallel holes. Improved consistency in producing parallel holes can be achieved as the concept
allows correction of any problems from a build up of tolerances
on the fixturisation. The reason that the mechanical
improvements in the clamping and feeding mechanism have
resulted in better hole form and the possibility to produce
reverse tapered holes is that the gap between the electrode
and the workpiece remains constant.