Fun with hexaflexagons
blah blah intro
Ingredience
You will need:
- color printouts of the jrmf hexa-hexaflexagon
- glue sticks
- (I mean it)
- (If you use tape, your thing will be so thick that it won't flex nicely.)
Instructions for assembly
Stage 1: Make the long, double-thick strip
- (If you are going to do any mapping stuff later, consider writing numbers on each of the colors. I find that the blue and the purple are often a bit hard to tell apart, for instance.)
- Cut out the two parts of the strip.
- On one end of each part, there's white triangles with a black border around them. You want to keep those attached; they are glue tabs for later.
- On the other end of the strip, there's notches where there aren't borders. Cut those ones out.
- Thus your two pieces will look like if Pac-Man was a very colorful dachshund1.

- Fold both of the parts in half, hot-dog style, with the color sides out.
- Glue the insides together.
- Now your two parts are both double-thick.

- On one part, you have a blue triangle sticking out; on the other part, you have a yellow triangle sticking out. Glue the back of the blue triangle to the back of the yellow triangle.
- Now you have created one long strip, which is double-thick all the way along!
- On one side of this long strip, all the warm colors are happening. On the other side, all the cool colors are happening.

Stage 2: Fold up the hexaflexagon
- Starting with the warm colors, fold same-colored triangles diagonally onto each other: yellow onto yellow, orange onto orange, and red onto red.
-
Here's a picture of folding red onto red. Notice the blue dashed line I drew where I am making a valley fold.

-
Your strip will kinda coil up as you do this. Here's a partially folded strip.

-
- Once all the warm color diamonds are folded up, now all the cool color triangles will be lined up in diamonds. Fold blue onto blue three times.
- In the picture below I am pointing out the first two blue-onto-blue folds; once these two folds are made, only green and purple will be visible. Flip the strip over to find the third blue diamond.

- Now your gadget will be a hexagon with one green side and one purple side. Hooray!

- The white triangles with black borders are glue tabs. Tuck the one triangle behind the other so that the glue tabs line up, and then glue them together.

-
A word I have needed to look up how it is spelled every time I have ever attempted to write it. ↩