It seems like we reached the era of 3DPrinting were more and more companies rise up developing new kind of 3dprinters, bigger, faster or with complete new materials. But one thing stays mostly always the same. The printed layers are nearly always visible for the human eye . Good engineered machines could decrease the layer height to microns but that affects the fabrication time or the size of the object. So talking about big scale additive manufacturing we could wether take the visible lines as a design statement or we have to find ways to get rid of them . But 3D-Printing gives also the freedom to produce forms which were impossible or very difficult for cncmilling . It is also a forceless fabrication method and much easier to program compared to cnc-milling strategies. The future definitely belongs to 3dprinting but besides improving the machines and processes we also have to find feasible solutions on the way
VS.
ADDITIVE
ADDITIVE SUBTRACTIVE
ADDITIVE VS. SUBTRACTIVE
SUBTRACTIVE CNC-milling is a well established fabrication method for prototyping out of a wide range of materials as well as fabricating parts with a high accuracy for the industry as mass production tool. It is one of the most precise fabrication method and is used for big scale as well as production of small pieces. But the disadvantage of CNC-milling is that mostly by fabricating complex freeform shapes, much material is wasted because the prefabricated materials are coming in standardized shapes . That also affects the millingtime and the wear and tear of the tools. It also needs much programming effort to get to the final shape. COMBINATION So the combination of both methods could be very senseful . Mostly the advantage of the one is the disadvantage of the other. So by combining both we can get all the advantage and getting rid of all disadvantages .
Image Source: Warping, 3dhubs Image Source: Nital, Nagami: Manuel JimĂŠnez GarcĂa
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