There is no fixed definition of traditional folds. We may also call it classical folds. Instead of trying to give a well-defined notion to some class of conventional origami, we present here typical fold methods of traditional origami. Generally, traditional folds allow us to construct origami more complexly than Huzita-Justin folds.
Examples of traditional folds are given in
By unzipping it, we obtain the nb file.
Our starting point in this direction of R&D is the following article we published in
T. Ida and H, Takahashi, A New Modeling of Classical Folds in Computational Origami. pp. 41 – 53, EPTCS 352Proceedings of the 13th International Conference on
Automated Deduction in Geometry Hagenberg, Austria/virtual, September 15-17, 2021, Editors P. Janičić and Z. Kovác.