origami preliminary base

Origami bases are often the starting point of models and projects.  The Preliminary Fold, or origami Square Base is one of a group of traditional bases that are used in both traditional and more modern origami design.  A few more folds and it becomes the bird base

TIP: Although it is very simple to fold, make sure you get the creases the right way round, otherwise you will end up with the Square Base’s close relative – the Waterbomb Base, which uses the same creases, just reversed.

A completed Preliminary FoldCrease Pattern for the Preliminary Fold

How to Fold a Preliminary Base

StepDiagram
1. Start with square of paper, coloured side upSquare piece of paper, coloured side up
2. Fold the paper in half diagonally and unfoldFold the paper in half diagonally
3. Fold the other diagonal and unfoldFold the second diagonal
4. Turn the paper overSymbol for turn the model over
5. Fold the paper in half, edge to edge and unfoldFold the paper in half, edge to edge
6. Fold the other edge to edge and unfoldFold the paper in half in the other direction
7. Turn the paper overSymbol for turn the model over
8. Bring the four corners together. You are not looking to create any new folds here. You are collapsing the paper on the folds you have already madeBring all four corners together
9. Squash the base flat. You have completed the Preliminary FoldA completed Preliminary Fold

Get Involved

I’d love to hear your views on the preliminary base.  Have you folded any models that use it? Feel free to let me know what you think in the comments below, or you find can me on Instagram or Twitter. Check out my Pinterest boards too!

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