Here’s my first shot at a three dimensional object. 3D is what I’m really interested in.
My goal here was to design the simplest cube with interlocking sides possible without getting design help from the internet. I thought I would see if it was possible to design one panel that would work for all six sides. It was not. The panels have to fill the gaps left at the corners by the width of the material. I solved this awkwardly by making a small tab on one corner of each panel. There are six sides and eight corners. One panel had to have three tabs (the panel in the lower right corner).
And the assembled cube.
I should revisit my design. I’m sure I could widen the little corner tabs to a third the width of a side so the edges would create a uniform box joint.