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A lot of chapters constantly repeating the idea of where a particular market was, where it is now with respect to 3D printing, and where it could be in the future. Want a new industry? Flip to a new chapter. Or just read one chapter and make up your own industry. It'll be like you read the book.
Salt- I had to acquire this book for a course. I already have industry experience. Probably reads slightly better for people without.
My initial experience to 3D printing was through my brother who worked in a machine shop using STL tiles to print ABS prototypes to be copied by manual machining after the design was worked out. I thought "what a useful tool in some situations." The book looked like a good overview of the current 3D printing fad, and had a lot of illustrations. So far, so good. But after reading the book, after the little section that was solid and explanatory, the rest was mainly boosterism, and looked like little more than promotional literature. I think that 3D printing as presented will be embraced by the "technology will solve all our problems, even those we invent to justify what we do" crowd. The title says "the promise and peril," but the text mostly is all promise with several disturbing implications that indicate real perils as well, but none of the perils are discussed thoroughly to provide a real balance for our consideration.