Laser-cut - designed for 3mm in MDF. See "snail instructions.pdf" on how to assembly.
This is a scalable design - although it was made for a material thickness of 3mm, you may scale it, for example, 166,66% to laser-cut it in a 5mm plywood.
Update (Ago 2019)
- new instructions;
- the laser-cut file is in dxf R12 ASCII format.
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A thanks to FabLab Lisbon: