1993
The term 3D printing originally referred to a powder bed process
employing standard and custom inkjet print heads, developed at MIT in
1993 and commercialized by Soligen Technologies, Extrude Hone
Corporation, and Z Corporation.
The year 1993 also saw the start of a company called Solidscape,
introducing a high-precision polymer jet fabrication system with soluble
support structures, (categorized as a “dot-on-dot” technique).