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Pure and Pureland Origami
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Pure Origami
Essentially, 'pure' origami refers to folding that requires:
- Only a square sheet of paper be used
- No decoration be done post the completion of folding
- That no tape, glue, or scissors be used in the folding process.
Pureland Origami
Essentially, 'pure' origami refers to folding that requires:
- Only a square sheet of paper be used
- No decoration be done post the completion of folding
- That no tape, glue, or scissors be used in the folding process.
Pure Origami is a relatively new invention. Making paper creations with folding and cutting was common in the past. The 200 year old book Senbazuru Orikata shows models where cuts have been made. There's no apology or "opps" involved, it was okay to have cuts. Even today, some Japanese origami books will have models that have cuts.
So given the above criteria, not all origami models out there in the world today are considered 'pure' origami designs. Designs such as Neal Elias' 'The Last Waltz', Llopio's moment of truth', etc require rectangular pieces of paper whereas tessellations can also be made from pentagons and hexagons.
Pureland Origami
Another type of kind referred to is 'Pureland' origami. So, what kind of Origami is this? Pureland origami refers to those models, which conform to the restriction of using only mountain and valley folds (hence the reference to 'land' in the type of origami) in addition to pure origami rules. This would mean that since only 2 types of folds are required, the folding process cannot be complicated with sinks, folds and the like.
In the late 1970's, John Smith developed the concept of "Pureland" origami. The rules in Pureland origami are the same as those for pure origami with the added restriction that only mountain and valley folds are allowed. The "land" part of Pureland comes from the fact that mountain and valley are elements of land.
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