Monday, January 25, 2010

A Few More Sides

Ever since seeing Andrew's Pentagon Pig, I had to try making a model from a pentagon. I ended up getting a bit distracted and decided that folding an insect from a heptagon would be a better idea. It took me a while to find instructions on how to fold a regular heptagon from a square (in fact, the ones that I found weren't really good... they could do with some simplification), and then I started folding. At first, I had something that looked like a turtle with six legs, using only the corners of the heptagon for flaps. I gave up one that idea pretty quickly, and started doodling. A couple of folds into the doodle, I knew that I would end up with a dolphin. How do you get a dolphin from a heptagon? I'll show you how.
Dolphin CP

Thats how. There are quite a few details to be added after that. With a crimp near the top, you can form the head section. Then you can make the head with some reverse folds and a petal fold. Another reverse fold makes a flipper, and the excess of the body can be folded beneath. The flipper actually took me seven tries to get it right, which ended up being on the final model. The tail just needs to be folded downwards and thinned with two layers tucked inside and a closed sink. A couple of folds underneath can make a nice lock in the middle of the tail. Here are some pictures of my final dolphin.
Dolphin, Ryan MacDonell
Dolphin, Ryan MacDonell


origami madness said...

Awesome! I will fold this from CP...

FYI there's a pretty smooth heptagon folding method here, it's recursive so you can use it to any degree of accuracy desired:

Cupcake said...

Thanks, I look forward to seeing if the CP has enough to fold from.
I like the folding method. I ended up using this, up to step 7:

After that, I stopped understanding the diagrams and just used the edges as a reference.

origami madness said...

Alright, I collapsed the base without too much trouble-- but as usual, I'm stuck on shaping, particularly the head and flippers.

origami madness said...

oh, I think I got it now. I was tired so I didn't bother figuring out the tail, i just did something else: