![]() ![]() This is in contrast to sculpting style 3D modeling software, which is controlled much more visually. Parametric CAD allows you to create 3D models based on a series of parameters, such as defining a cube by its origin and dimensions. Only a few have been truly open-source, and even fewer have been both open-source and parametric. While these programs certainly helped makers get into 3D modeling, most had serious limitations. But, with the rise of hobbyist 3D printing, a number of much more simple CAD programs became available. The available software, while very powerful, had a very high learning curve and took a lot of training and experience to master. Until recently, computer-aided design (CAD) software was really only used by engineering companies who could afford to pay thousands of dollars a year per license.
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