The 3D printer was pioneered by several inventors, but Charles “Chuck” Hull is most widely credited as the inventor of modern 3D printing and the first commercial 3D printer.

Quick Scoop: Who invented the 3D printer?

If you ask “who invented the 3D printer,” most experts point to Chuck Hull, an American engineer who created the first working stereolithography (SLA) machine and launched the first commercial 3D printer.

  • In 1983, Chuck Hull built a system that could create solid objects layer by layer using UV‑curable resin.
  • He filed a patent titled “Apparatus for production of three-dimensional objects by stereolithography” in 1984, granted in 1986.
  • He then co‑founded 3D Systems, which released the SLA‑1, often cited as the first commercial 3D printer, in 1987.

So in everyday conversation, when people say “the person who invented the 3D printer,” they usually mean Chuck Hull, because he turned the concept into a practical machine and a commercial industry.

But was he really the first?

The story is a bit more nuanced, and that’s where forum debates and tech history discussions get lively.

Earlier groundwork

Before Hull, Japanese researcher Dr. Hideo Kodama proposed and prototyped an additive manufacturing system that looks very much like early 3D printing.

  • Around 1980–1981, Kodama described a method to create 3D plastic models using a layer‑by‑layer process with photosensitive resin and UV light.
  • He filed an early patent application in Japan, often cited as one of the first known 3D printing patents, but it was never fully completed to grant.

Because Kodama’s work did not become a commercial system and the patent path stalled, many histories say he laid the foundation , while Hull is credited with the first fully realized and commercialized 3D printer.

Other key inventors

Several other inventors developed different 3D printing technologies in the 1980s, which often come up in “who really invented it?” threads.

  • Scott Crump – invented and patented Fused Deposition Modeling (FDM) around 1989, extruding melted plastic through a nozzle; he co‑founded Stratasys.
  • Carl Deckard – developed Selective Laser Sintering (SLS), fusing powder with a laser, filing patents in the late 1980s at the University of Texas.

These people didn’t “invent the 3D printer” in the singular sense, but they invented major 3D printing processes that dominate different corners of the industry today.

Mini timeline of early 3D printing

Here’s a compact look at how the core ideas evolved in the 1980s.

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Year Person Key contribution
1980–1981 Hideo Kodama Describes and prototypes a layer-by-layer UV resin system for 3D models (early 3D printing concept).
1983 Charles “Chuck” Hull Builds a working stereolithography setup using UV-curable liquid resin.
1984–1986 Charles “Chuck” Hull Files SLA patent (1984), receives it (1986), coining the stereolithography method.
1987 3D Systems (Hull) Releases SLA‑1, widely recognized as the first commercial 3D printer.
Late 1980s Scott Crump Patents FDM, extruding molten filament layer by layer; becomes basis for most desktop 3D printers.
Late 1980s Carl Deckard Patents SLS, using a laser to sinter powder into solid parts.

How people talk about it online

In tech forums and Reddit‑style discussions, you’ll often see a few recurring viewpoints:

  1. “It’s Chuck Hull, full stop.”
    People in industry and mainstream media usually credit Hull because his SLA‑1 was the first commercial 3D printer and stereolithography became the first widely adopted 3D printing process.
  1. “Kodama was first, Hull made it big.”
    History‑minded commenters point out that Kodama’s earlier work shows the concept of layer‑by‑layer UV‑cured resin before Hull, but he didn’t get a granted patent or launch a product, so his role is “foundational” rather than commercial.
  1. “There’s no single inventor; it’s multiple technologies.”
    Others argue you can’t pick one inventor because FDM, SLA, and SLS are all “3D printing,” each with different inventors (Hull, Crump, Deckard), so the technology is really the result of parallel innovation.

A typical summary you might see in a comment thread would be something like: “Kodama sketched it, Hull commercialized it, Crump and Deckard diversified it.”

Latest context and why it still matters

Even in 2026, the question “who invented the 3D printer” keeps showing up because 3D printing has exploded into consumer makerspaces, medical implants, aerospace parts, and even experimental construction.

  • Modern SLA machines still trace their lineage directly back to Hull’s stereolithography patent and the SLA‑1 system.
  • Most hobby printers on desks today use FDM, following Scott Crump’s late‑1980s concept of extruding a thermoplastic filament.
  • Professional metal and polymer systems use SLS‑style powder‑bed methods, an evolution of Deckard’s work.

Because of that, inventors like Hull, Kodama, Crump, and Deckard are still frequently cited in news articles, industry retrospectives, and anniversary pieces about 3D printing’s rise over the past four decades.

TL;DR:
Most sources credit Charles “Chuck” Hull as the inventor of 3D printing in the modern, commercial sense, thanks to his stereolithography patent and the first commercial 3D printer (SLA‑1).

However, earlier work by Hideo Kodama and parallel inventions by Scott Crump (FDM) and Carl Deckard (SLS) are crucial pieces of the full origin story.

Information gathered from public forums or data available on the internet and portrayed here.