And then I found this (amazing) design of mine, and I thought: hey! i drew diagrams for these about a year ago! And I thought about sending them to a book, since they weren't easy to make. But, I think this model is worth to be public. So, since I forgot how exhausting was to draw these diagrams, here they are. My Kings Day gift to you all (i think its a mexican tradition only...). I would be glad to see your results!