I don;t think anybody was really doing FDM/FFF until the 90s and it didn't really take off until the 2000s. It was quite expensive, required a high level of ex

I don;t think anybody was really doing FDM/FFF until the 90s and it didn't really take off until the 2000s. It was quite expensive, required a high level of expertise in both mech E and CS, and existing subtractive methods (like CNC and lathe) were very effective.