Showing posts with label ball. Show all posts
Showing posts with label ball. Show all posts

Saturday, December 6, 2008

Basic Geometry II

Welcome back to math class. :D
Actually, no.

In addendum to the Easy Softie Ball in 12 Pieces, there exists an even easier way to make a ball in six pieces. The 6-piece version, like the 12-piece, only requires the copying and cutting out of one form, but there are only half as many copies to make. Ergo, easier. Yay!



Now, if you're interested in the math behind the form, a 6-piece from peels is actually a little more complex than a 12-piece from pentagons. The 12-piece ball isn't actually a ball in Euclidian geometry: it's a dodecahedron that becomes a ball when you sew it up and stuff it because the pressure of the stuffing inside applies evenly across the planes, seams, and vertices. The 6-piece ball, on the other hand, is an actual, true sphere in design and execution. This is because it employs the relationship between the circumference and diameter of the circle formed by the cross section of the final sphere at maximum diameter.



And you thought this was a post about softies. >w<

By now, you might be asking "hey Ku, what am I supposed to do with all these plush balls?"

Here is your answer:



Inexpensive, unbreakable, toddler-safe Christmas ornaments. Ta-da~!

Thursday, September 25, 2008

Basic Geometry

ただいま〜

HAPPI BAASUDEI, お誕生日おめでとうございます!★d(o⌒∇⌒o)b☆

Happy Birthday to Rachel, the lovely lady on Humphrey street who brews kombucha for all her friends, and who baked her own tragically delicious birthday cake. I say "tragically" because it's all gone now. ;_; That was damn fine cake, Rachel. Majide.

And now for something completely different:
A Scotsman on a horse.

No, actually, it's a pattern. Yes, I am still making patterns! I would probably have them up more often, if only I stopped making things and focused instead on writing up how to make things for a while. Also, if my camera worked better.


This is one of several techniques to make a sphere in fabric. It's one of the more decorative methods, because you can pick twelve different colors and it comes out looking all colorful. It is also very easy, because there is only one pattern piece to cut out. Download the pattern sheet (with instructions) and see for yourself. I'mma put up some process pictures, just for fun:



Inside-out, with a gap for turning...



...turned right-side-out, and getting stuffed.

Simple, right? At the stuffing phase, if you want to make your ball extra special for any pets or children that you may intend to present it to, try sinking a little rattle or jingle bell into the very middle of the ball and stuff all around it.

A rattle is simple enough to make; just get a film canister and put some rice/beads/pebbles inside. A jingle bell is only marginally harder to set up, because if you just put a bell into the stuffing, it won't jingle, but if you put the bell into a film canister, you can't hear it very well. The solution is to cut small holes in your container, or get these:



Some (but not all) medicine bottle caps come with holes already formed into the sides. Just put a little bell inside two caps, tape them together, and you'll have a nice clear-ringing jingle mechanism.

それでは、楽しみしてね。Go have a ball!

...AUGH, I said it. I tried so hard not to make that pun... チェクショ〜ウ。>,<