Instructables
Picture of Catahedron Costume
What's cuter than a platonic solid? A cat dressed up as a platonic solid for Halloween!

This instructable details the making of a soft quilted tetrahedron costume for the more patient of my two cats.
 
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Step 1: Choose fabrics and preprocess them

The first step in any quilt is to pick out fabrics. You will need at least 4 colors, two for the contrasting triangles, one for the outside border, and one for the backing. I was working with fabric scraps from other quilts, so I used more colors but whatever you've got will work. Be sure to wash, dry, and iron all fabrics at least once before you start working with them. There's nothing worse than finding a finished product ruined in the wash by runny dyes or fabric shrinkage.

You'll also need an attractive color of quilt binding. Binding can be purchased at most fabric stores (I use Joanne's). The binding is a cloth strip that will sandwich the outer hem to create a finished edge. Also make sure you have a color of thread that matches your fabrics.

Step 2: Cut triangles and piece them together

Using a rolling cutter, measure and cut equilateral triangles from the chosen fabrics (the size will vary depending on the size of your cat). You will need 9 of one color and three of the other. Pin the triangles together one pair at a time, sew, and iron the seams flat immediately. Never skip the pinning or ironing steps! Quilting is all about patience; you will get far far better results if you are methodical.

Measure a strip of your 3rd contrasting fabric for the outside edge; the border shown in the pictures is a 2" strip. When the 4 triangles are sewn together and ironed into a bigger triangle, pin the border on the edge and sew in place. Once one edge is attached, cut the edges flush, iron flat, then repeat for the other edges.
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twilightfox1 month ago

It's the Triforce!!!!

Really great and fun idea you have and very aesthetic to look at. We are cat people too and I have a suggestion for another use. Make it a little bigger, make a bottom triangle, sew it up well, beef up the frame, add a much larger entry and suspend it from the a hook loop just high enough to make an enclosed cat hammock. I bet you could make and sell thousands to pet stores everywhere...no kidding!
lugreen2 years ago
love it and the pun! :)
lugreen lugreen2 years ago
and am now thinking (as my cat does NOT do Halloween) if I could make a dodogahedron??
oshiete43 years ago
The costume would be lighter and safer if the frame were made of plastic drinking straws. We used to make tetrahedron kites out of straws, string, and tissue paper. Pass the kite string through five straws (just suck the string through from the other end), tie into a <|> shape (imagine those triangles being a bit bigger there!), and add another straw for the final leg of the tetrahedron.

With the fabric, though, you probably could dispense with the string, or just use a thin elastic. No worries regarding poking wires!
mrigneous6 years ago
who thowz 4 sided dice... honestly?
Yeah, I think this die is "loaded" it always lands on 4. :D

(I am SO gonna make one for "mellow boy cat"
If you put some numbers on it you'd have a bona fide 4 sided dice. If you've got a bunch of cats you could make a complete set of kitty dice! Lifesize dnd anyone??
Haha. The d20 could just be a 20-sided cat-sized hamster ball. =P
LMFAO
Laura.D4 years ago
I love your cat he's such a cutey
Laura.D4 years ago
That's cool but my cat would scratch my face off if I tried to put that on him
dombeef4 years ago
Im in your quantum catahedron, maybe.
seanturvey4 years ago
You could also make Barkminster Fuller's famous D-O-Gesic dome.

Ausm4 years ago
That's pretty clever.
merijnvw4 years ago
hahahahaha!!!
So cute...I can't believe the cat likes it so much. It's like a mini house for him too. I can't even get my dog to wear a shirt, much less a costume. Nice instructable.
Does the cat "Like It" or is it thinking up new and painful ways to get even at about 3:00 in the morning....LOL
That's adorable!
red-king5 years ago
bad pun. good instructable.
Instead of a catahedron, I might make a pyramid version of this. thanks for the idea!
{tauney}5 years ago
junge5 years ago
SEhr interessant, aber was soll das darstellen oder was für ein zewck hat das Derieck. Sieht echt lustig aus *lol*
What a cute, funny idea. You have a very patient kitty.
zimmemic255 years ago
i like the pics where the cat is sitting inside the costume and carefully looking through the hole :-P
That's my fave image too.
christineU6 years ago
I can't get over the cuteness of your cat. I especially love the overhead shot in step 8, with the head and tail sticking out of the awesome costume. It's so great that the cats actually like it.
maicoh (author)  christineU6 years ago
Awww, thanks! He's an incredibly cute fellow, but but that's how he gets you! He may look sweet, but he's really full of mischief.
I like the last picture where he is in the costume looking out. It's really cute!
Plasmana6 years ago
That looks really good!
SFHandyman6 years ago
Cats, Platonic Solids and Quilting. Who would have thought they go so well together? 5/5 Too many laughs at the great photos. Thanks
P.S. I saw your stash and I'll raise you one.
=SMART=6 years ago
Awwww that is soooooo cool !!! Favrouited + 5*
espboy6 years ago
WTH? LOL!
AznPanda6 years ago
lol ;P
MrRodrigez6 years ago
LOL this is soo adorable! My cat would rip my face off when I would try to fit her in it though...
Funny costume! I love the originality! 5/5
fwjs286 years ago
what about a dodecahedron!!1that be awesome.....
gabbycat6 years ago
that is the cutest thing I have ever seen. But my cats wouldn't talk to me for a week.
im concerned
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