3D Printing is something I do periodically. There are several forms of 3D Printing, and some include:

• Fused Deposition Modeling (FDM)
• Stereolithography (SLA)
• Selective Laser Sintering (SLS)

At present, I own a Prusa MK3S, an FDM 3D printer that specializes in plastic models. I've also used SLA and SLS printers in my various workplaces.