Definition - What does 3-D Printer mean?
3-D printers design three-dimensional prototypes and create the end product by directly building them using computer aided design (CAD) or software-created 3-D design diagrams, figures and patterns.
3-D printers may also be called additive manufacturing printers or fabrication printers.
Techopedia explains 3-D Printer
3-D printers eliminate the need for further machining or subtracting processes such as cutting and grinding; the final product is built in three dimensions without waste.