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In addition to using 123D and Fusion 360 for our outreach work, we occasionally use Tinkercad Beta which although limited in its functionality, is ideal for introducing CAD in primary school or for situations where time is limited.

Tinkercad Beta is a free online CAD software which is fun to use and provides a very easy introduction to CAD. You can use Tinkercad Beta at

Tinkercad mouse control diagram

Tinkercad basic instructions

General introductory video

Design a keyring in Tinkercad