The history of 3D printing.

Today, 3D printers are everywhere. Since the early 1980s, 3D printing has evolved into a multi-billion dollar global industry.

Before 3D printing, product designers and artists lived in a two-dimensional world, creating designs on paper. If a 3D model was necessary, designers had to build it by assembling parts or sculpting from blank solids. These models, also known as prototypes, were time-consuming and expensive to build. In the 1970s, CAD software emerged to improve the design process. Designers replaced tedious hand drawings with computer sketches. This saved money and time, but they still didn't have an easy way to create a model.

3D printing history would be incomplete without a discussion of the software that powers the printers. Before 3D software, designers and engineers generated flat, two-dimensional designs and artists created 3D models from those designs. The process was difficult and expensive. This all changed with the invention of 3D computer-aided design (CAD) software.

Designers could translate their ideas directly into three-dimensional models. First-generation 3D CAD software was very expensive and required high-performance workstations. Aerospace and automotive companies were the primary users of early CAD software. They worked with software companies to improve 3D CAD technology.

3D CAD software generates models using a mesh of geometric shapes. Designers can view and edit the models on their computer screens. STL files translate models into a language 3D printers can understand. Slicer software then slices the CAD model into virtual layers for printing.

Today, 3D CAD software prices are low enough for consumers to use with desktop 3D printers. Evolving 3D printing technology continues to drive improvements in quality and price.

Prototyping is still the most common application for 3D printed models. Designers create models to view designs in tangible form. This allows them to make modifications and improvements early in the design process. 3D printed parts made of composites and metals are then used in the final products. They are also used for molds and tooling on the factory floor.

In thirty years, the dreams of a few brilliant people created a booming new industry. Their hard work and long hours now benefit the millions of inventors, artists, and engineers.