Part forming technology can be roughly divided into two categories: one is subtractive molding (that is, forming the desired shape by removing material), and the other is additive molding. This article we talking about additive molding.
When it comes to additive manufacturing, 3D printing technology is undoubtedly an unavoidable topic. This technology has been shining in the news media in recent years. Many so-called 3D printing products have constantly refreshed our cognition, such as 3D printed cars, 3D printed pistols and various 3D printed products, giving people the illusion that it will completely replace subtractive molding technology. However, in fact, this road is still very long, and from the current situation, it is difficult for us to see the possibility of such a comprehensive replacement.
We can understand the process of 3D printing through the following set of pictures.
My understanding of 3D printing technology is mainly still at the stage of using it to make the first version of product samples. During the product development process, I did use 3D printed products, but the printing results were often unsatisfactory. Either the surface roughness was too poor, or the printed parts were incomplete. In short, I was never completely satisfied. And the printing of plastic parts is limited to what I have come into contact with. Maybe it's because I have limited knowledge, I am not very optimistic about this technology, maybe it's because I haven't seen its true potential, or maybe it's because I am like a frog in a well and have not had the opportunity to come into contact with those high-end 3D printing products.
Of course, although this technology still has many imperfections, we cannot deny that it is indeed a possible means of forming parts in the future, and the possibility is quite large. From this point of view, we should recognize and treat it with an optimistic attitude.(来源：UG学习堂小胥收徒)
