Make your own toys with Ponoko

In the summer of my 12, my vacancy was in the house of my grandparents. Alone, waiting some friends, during the first week I made this 3d puzzle with a wooden piece found in backyard warehouse of my grandfather.

Here the 2008 revision, for the Ponoko Contest.

Dimension is proportional to the material's thicknesses,
the example shows:
- white acrylic 3mm
- whiteboard double-sided 6mm
- clear transparent acrylic 8mm

Nice to test your ability, to make a gift and to hidden some text engraved inside the knot.

(12 pieces to make the 'Knot')