Cube inside a Cube

This is a 12mm cube inside a hollow 25mm cube that has filleted edges and 15mm side cut outs that I have created as part of the Fusion 360 tutorials from the University of Warwick.

Here is a link to their other tutorials.

https://warwick.ac.uk/fac/sci/wmg/about/outreach/3d_design_printing/fusion_tutorials