Hi Gerardo said: "Angel Ecija has many different action models that include non-folding-materials that are in order to work: "Spinning Top" uses a toothpick so you can make it spin, "Pinwheel" needs a thumbtack and a stick in order to spin as well, "Crossbow" uses string to shoot its quarrels, and "Kite" uses string also but so you can make it glide."
Ángel Écija is a great creator and not only has action models but also many more. He has been in the world of origami since he was 8 and he has been creating models more than 30 years. He is not very fond of the social networks and usually he not takes the bothering to answer when some site criticized his work as in the case here or some web steals their model, etc… Having said that, I would like to make two observations. First, you need only to remember the history of Origami to see that everything was more permissible. The principle of “not cutting, not stiking to only fold” is relatively new, from second half of S. XX, and for it we adapted the size and type of paper. Besides that, he's certainly not the only one that uses a little stick to move the windlass blades. The list would be too long and include many others like Tomoko Fuse, Jeremy Shafer, Leyla Torres… But even then, the second and more importantly, the figure always is folded so I believe it is not important if one adds a ballpoint pen, pencil or a wood to rotate it. I do not mind about the material it is made figure folded paper, plastic, metal ... Best regard Inmaculada Lora . -- "Cuando las manos están ocupadas, el corazón está en paz" Akira Yoshizawa
