A pleat fold is symbolized by a zigzag arrow,
with both a valley fold line, and a mountain fold line on the diagram. So fold a pleat
fold like this; fold it up, and the second fold; fold it parallel to the first, in the
opposite direction. This is a pleat fold. An accordion fold is a repeating of the pleat.
So, valley along the same line, mountain, and valley again. This is an accordion fold.
A swivel fold is like the pleat fold, except the second line, the second crease is folded
at an angle to the first. So, fold a val, no, fold a mountain fold that pivots at a
point to the original. And then, bring the second fold down over the first. This is a
swivel fold. A crimp fold is exactly like a swivel fold, only done with two layers of
paper. And a swivel is done on the other side, as well. So that it’s symmetric on both sides. This
is a crimp fold.