The mold manufacturing industry has come along way technologically over the past two decades. I can remember when CNC (computer numerically controlled) machining centers came out in the early 1980s, and one of the first mold companies to get one of these state-of-the-art machines was Tech Mold Inc. in Tempe, AZ. It was a wonder, that's for sure. Bill Kushmaul, owner of Tech Mold, was as proud of that machine as most would be of their own newborn baby!
To demonstrate the stability of the machine - which resulted in precision accuracy during the machining process - Bill stood a nickel on edge on the top front edge of the machine while it ran. The nickel stayed there for a long time, I'm guessing.
Over the past two decades, mold component technology as well as machine tool technology and CAD/CAM software programs have evolved, and generally moldmakers accepted and adopted these tools at their companies. Other technologies, however, haven't been so readily accepted by moldmakers. I've observed this over the years and continue to see this behavior among moldmakers....