What is 3D printing specifically?

3D printing technology is a rapid prototyping technology. Let's start with plastic products. In the past, the traditional technology was made of plastic molds, but the development cycle was long, the molds were expensive, and proofing was a very troublesome job. With 3D printing, proofing can be completed quickly and the cost is very low. Traditional printers print on paper in two dimensions, while 3D printing is a three-dimensional thing, which is very convenient for molding. Generally, it is formed by thermal accumulation, that is, the object is divided into several layers and then printed layer by layer.