Preliminary Base
Here you are gonna learn how to fold the Preliminary Base. Many models use this base as a starting point.
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1. Start with a square sheet of paper and valley fold it in halfes.
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2. Precrease and squash fold. Turn model over side to side.
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3. Precrease and squash fold.
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4. The finished Preliminary Base
Starting from the Preliminary Base you can fold the following models: