How (FDM) 3D Printing Was Invented

Discover the history of FDM 3D printing and how Scott Crump’s glue gun prototype at Stratasys launched an industry, from the first toy frog to aerospace-grade Ultem parts on the 22 IDEX machine. The story of fused deposition modeling does not begin in a high-tech laboratory or a silicon valley boardroom but rather in a kitchen in Minneapolis circa October 1988. Scott Crump, a mechanical engineering graduate from Washington State University, was attempting to create a toy frog for his daughter using a hot glue gun loaded with a homemade mixture of polyethylene and candle wax. As he built the object layer by layer on a piece of wax paper, he realized that the process could be automated if a computer were driving the nozzle. This single weekend hack became the foundation for an entire global industry and serves as the direct ancestor to every FDM 3D printer in existence today, ranging from entry-level hobbyist machines to quarter-million-dollar industrial systems. At the time Crump was experimenting in his kitchen, additive manufacturing was in its infancy. While Charles Hull had already patented stereolithography in 1984 and Selective Laser Sintering was being developed in Texas, those technologies relied on complex lasers and exotic feedstocks like photopolymer resins or fine nylon powders. Crump’s vision was fundamentally different because it utilized real engineering thermoplastics—the same materials used in injection molding and traditional manufacturing. To bring this vision to life, Crump and his wife Lisa incorporated Stratasys in Eden Prairie, Minnesota. The early days were defined by a scrappy, family-run atmosphere where prototypes were often cobbled together from vacuum cleaner tubing and chrome auto parts. The road to commercial success was long and required immense perseverance. Stratasys liquidated family assets and raised venture capital to fund development, eventually shipping their first commercial machine, the 3D Modeler, in April 1992 with a price tag of $130,000. It took years for the technology to gain traction, with only five units sold in the first three years. However, the landscape shifted significantly when Stratasys began qualifying engineering polymers like ABS, polycarbonate, and eventually Ultem 9085. This validation process turned raw industrial polymers into certified materials that could be used for flight-ready parts in the aerospace industry, moving FDM beyond simple prototyping and into the world of end-use production for companies like Boeing and Airbus. Another pivotal moment occurred on October 30, 2009, when the original 1989 patent filed by Crump finally entered the public domain. This expiration triggered an explosion in the 3D printing ecosystem, leading to the rise of the RepRap project and companies like MakerBot, Ultimaker, and Prusa. Today, the influence of that original kitchen experiment is felt in every corner of the manufacturing world. At Vision Miner, we continue this legacy by focusing on high-temperature, open-material systems like our 22 IDEX, which handles the most demanding engineering polymers including PEEK and Ultem. We owe the existence of our shop floor and the modern 3D printing industry to that original toy frog. At Vision Miner, we specialize in Functional 3D printing, especially high-performance plastics like PEEK, ULTEM, PPSU, PPS, CFPA, and more. We also have extensive experience with 3D scanners, and a whole array of solutions available for purchase. If you're interested in using functional 3D printing and materials in your business, feel free to reach out, and we can help you make the right choice for your application. Call 833-774-6863 or email [email protected], and we're here to help! Follow Us ►Facebook:   / visionminer   ►Instagram:   / visionminer   ►Twitter:   / visionminer   ►TikTok:   / visionminer   00:00 The Toy Frog Origin 02:27 Inventing the Process 04:00 Founding Stratasys 06:17 The Industrial Era 08:28 The Desktop Explosion 11:50 Outro