3D printing is an additive manufacturing process in which 3D printing works by laying down successive layers of material, each of which can be seen as a thin section of an object. 3D printing is a rapid prototyping technique that creates three-dimensional solid parts from CAD designs or digital files by using metal, plastic or other materials. 3D printing is often used to make 3D model molds and has applications in jewelry, engineering construction, automotive, aerospace, education, industrial design, and more.3D printers are related to additive manufacturing. 3D printers use computer-aided design to understand designs. When the design is ready, material that can be dispensed through a hot nozzle or precision tool is printed layer by layer to create a 3D object from scratch.

Using 3D printing to create a part, the price and cost of 3D printing is abolished by factors such as part volume, part complexity, material selection, which 3D printing technology is used, and whether any post-processing is required. 3D printing can cost anywhere from $3 to thousands of dollars. It is difficult to get the exact cost of 3D printing without a 3D model. Factors such as materials, model complexity, and labor affect the price of 3D printing. 3D printing services can sometimes cost more than entry-level 3D printers.

In the past, 3D printing was often used to make molds for making jewelry, and even the jewelry itself. 3D printing is becoming more and more popular in the customizable gift industry, whose products include personalized art models and dolls, in many shapes: metal or plastic, or as consumer products such as 3D printed chocolates. 3D printing is now being used in more and more industries

There are several types of 3D printing, including: Stereolithography (SLA) Selective Laser Sintering (SLS) Fused Deposition Modeling (FDM)