Tinkercad is a free, easy-to-use app for 3D design, electronics, and coding
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Tinkercad is a free-of-charge, online 3D modeling program that runs in a web browser, known for its simplicity and ease of use. Since it became available in 2011 it has become a popular platform for creating models for 3D printing as well as an entry-level introduction to constructive solid geometry in schools.