Instructables
Make intricate geometric designs with thread on paper. I will show the steps to make a triangle here, but they work the same for other shapes.

Step 1: Materials

You will need:

Sewing things:
-thread
-3 needles
-a needle threader
-scissors

And also:
-a ruler
-sticky tape
-2 pieces of cardstock (I used index cards here)
-a pencil

And Either:
-a compass
or
-a protractor

Step 2: Design the Template

On the first piece of cardstock, draw a geometric figure. If you know how, it can be worthwhile to construct it with a compass and straightedge, if only because it makes the template look really cool when you're done. But it's just as easy to botch it with a ruler and maybe a protractor.

Once your figure is drawn, make evenly spaced tick-marks on each edge. If you use a compass and straightedge, this is done by bisecting each segment three or more times.

Step 3: Poke Holes

Poke holes at each tick mark on your template with a needle.

Then, I prefer to do this on the edge of a desk, put the template on top of the blank piece of cardstock. Poke two of the three needles into corners of the triangle so that the pieces cannot rotate, and then use the third needle to punch the remaining holes on that side through the bottom sheet. When you finish a side, move the needles to the next side and continue.

Step 4: The Outline

Thread an arm's length piece of thread and tape the other end to the back. Go around the outline of the triangle twice so that all sides have thread on them on both sides. When you get back to the beginning, untape the end and tie it in a loop.

(If you have an odd shape, it may take multiple pieces of thread and may not form a loop, but it's ok to just leave the ends taped as long as they're on the back.)
 
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in my graphics classroom there is a model of something like this but in 3D so it curves in two directions at once but only uses straight pieces of wood! it amazes me every time i look at it. awesome...
fwjs285 years ago
WHOA! that looks awesome!