Only paper beneath a punch or cut is affected. Open the folds in reverse. Cut pieces that meet across a crease join into one opening.
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First lesson in this subject: Turn a shape, don’t flip it
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An off-center fold leaves areas with different numbers of layers. A notch at a folded edge can become an internal opening when its two halves meet.
Only paper beneath a punch or cut is affected. Open the folds in reverse. Cut pieces that meet across a crease join into one opening.
Coordinates use the original grid. Round dots are punches; open notches are cuts.
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First lesson in this subject: Turn a shape, don’t flip it
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Practice · Follow each fold and choose where the holes appear after unfolding.
Book · Follow shapes through turns, folds, reflections, and different points of view.
Previous lesson · Reverse diagonal and straight folds while checking which paper layers actually lie beneath a punch.
Next lesson · Find the flat shape where a plane cuts through a cube or rectangular block.
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