.
Fold the top two triangles away from you, along the
dotted line. Afterwards your strip should look like the right hand picture in
Figure i.
Next, fold the top portion away from you, along the
dotted line in the left hand image of Figure ii. Again, you should end
up with the right hand image.
Folding away along the line in the right image in Figure
ii should leave you with Figure iii. Fold top sections
away from yourself along the dotted lines.
Continue in this manner, folding two triangles at a
time, until you again have a single strip. The two sides of the strip should
look like the top and bottom rows in Figure iv. If you're having
trouble, the folds in this section should all be the same way, a wrapping
pattern rather than a zigzag.
Flip the flexagon so you're looking at the bottom row of Figure iv.
As usual along the dotted line, fold the right hand side away from you. Reorient the flexagon so
it is in the same position as seen in Figure v. Check the bottom right
triangle to ensure it matches the image. If everything apart from this
triangle is correct, you've folded in the right place, but folded the wrong
way.
Fold the top section away from you in the usual manner.
You should now have a nearly complete picture as seen in Figure vi.
Underneath the lower-left triangle (it will be the only
one that is not from Image1) you will see the other end of the strip with the
second glue tab on it. Lift it up and over the aforementioned lower left
triangle. The two glue triangles should be next to each other as seen in
Figure vii.
Fold the left glue tab over and stick it to the other
one (A small piece of doubled over tape works well for us)
Flex away!
You may find the hexaflexagon a little stiff at first, but it should soften
with age.
Comments and suggestions are most welcome!
©2002,2012,2023 Peter Bradshaw