Open-closed sink-fold is a mixed folding of both open sink-fold and closed sink-fold. Here open sink-fold is applied to the left side while closed sink-fold for the right side. Before learning this folding technique, try to learn what both open sink-fold and closed sink-fold are. In this tutorial, I will start with both square base and balloon base to what open-closed sink-fold does to any model.
00A.
The "open-closed sink-fold" symbol can be shown as "open sink-fold" line on the left while "closed sink-fold" line on the right,
Here we are applying open-closed sink-fold to both a balloon and a square base.
00B.
If we apply "open-closed sink-fold", then both balloon and square bases will be turn into one without head.
In the next page, the instruction will show how to apply the open-closed sink-fold in detail.
