Add design for cardboard construction kit

content/02_dodeca_connectas.md

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+title = "Dodeca-Connectas"
+date = "2018-09-13"
+menu = "main"
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+
+## Laser Cut Construction Kit
+
+One of the assignments this week is to make a parametric cardboard construction kit on a laser cutter. I like platonic solids, so I'm going to base my kit on a dodecahedron. I sketched these tiles and connectors in Fusion 360.
+
+![](/img/02_design.jpg#c)
+
+For fit, there are three main parameters: thickness, kerf, and epsilon. Thickness and kerf are used to make shapes that should exactly interlock, and epsilon determines how much I intentionally undersize certain components in order to compress the cardboard. The other parameters control geometry.
+
+![](/img/02_params.jpg#c)
+
+
+