The mill speed and direction is monitored on a first pass, to determine the behaviour of the cut and the behaviour of the material itself during the sweep.
Everything is balanced against drawings and computer print-outs with illustrations of cross sections and detailed measurements which are translated into three dimensions and milled by hand, in this multi-step process of trial and error before a working final prototype can be studied, finessed and showcased in the process of getting ones idea from paper to market.