I understand what your saying, i have considered those companies for their water jet, however own technician wants somewhere that makes brake discs currently so that additional treatment, he mentioned heat treatment (i'm not familiar with the process) can be applied by them, those companies would only be able cut the desired shape and then we would have to find somewhere else
I did consider using the our own lab equipment in our college but since we've never made a brake disc the technician doesn't want to take the chances, but thanks for the thought.