source : ??? by Teruo Tsuji

You'll find in this section different techniques used in origami when folding a sheet of paper.

Wet Folding

For larger models, none of the foil-based papers are sturdy enough for long-term display.

However, a folding technique called 'Wet folding' can be used to make quite large, sturdy sculptures.

In wet-folding, a heavy paper is dampened before folding, which makes it malleable enough to fold; when the paper dries, it becomes rigid and resistant to damage.

To fold a model "wet", you should use a large square of paper -50 centimeters square is a good size- and have handy a small dish of water and a lightweight dampened cloth, such as a disposable dishrag. The paper should be fairly heavy; 28-40# ledger is a range of appropriate weights.

The paper should be dampened ligthly and evenly with the cloth before folding.
Take care not to overdampen the paper. It should be leathery, not soggy. If the surface is shiny with water or creases become fuzzy with loose fibers, then it is too wet, and you should stop and let it dry before continuing to fold.

Once the model is folded, it must be constrained to hold its shape until the paper has dried. Paper clips should be used sparingly, as they will leave a mark when the paper is dry. Depending on the surface of the paper, draftsman's tape can be used to hold the model in position until the paper is dry and can be stripped off afterward without leaving any marks.