How to apply an unfold in origami (animated instruction)
page is for those who want the instructions to learn how to apply an unfold.
Unfold or Flat-fold is one of most frequent folding technique you would apply in origami. This technique nullifies previous valley-fold or mountain-fold by flattening any folded crease line.
This is an animated instruction so it would be very easy to follow through. You are not required to have any prior knowledge about origami.
The instruction is shown below. Just click on "Ascend" button. You will be given a step-by-step guide. If you miss a step, then just click on "Descend" button to go back to the previous step.
If the screen is blank, just wait until it shows a message saying "Are you ready to get started?". If you find any bugs on this instruction, please send an email to.
If you are ready now, let's have a fun learning to apply an unfold.
Are you ready to get started?
Here you will learn how to apply an unfold in origami.
In this site, the unfold symbol is usually given as a dotted green line.
1. Here you can find a paper with two folded creases. The one on the left is a valley-folded crease and the one on the right is a mountain-folded crease. A green dotted line is drawn on each crease and this means that you need to unfold it. It does not matter if it is a valley-folded or a mountain-folded crease. Let's unfold it now.
2. Now, both valley-folded and mountain-folded creases are all unfolded.
Now, you know how to apply unfold in origami.
In this site, if you see a line symbol of dotted green line, this means that you need to apply unfold on the particular crease line.
For an example, We have a paper with two folded crease lines.
If you see a green dotted-line on crease line, you need to unfold those crease lines.
The unfolding process is a 180° rotation along the crease line axis to make a paper flatten on the crease -ine region.