Origami Heaven Origami Heaven is the website of paperfolding designer, author and illustrator David Mitchell x 

Cushions  
Cushions
are two part modular paper crystal designs where each of
the two modules is created by dividing a rectangle into a
grid of smaller rectangles using creases made in one
direction and then dividing each of these smaller
rectangles in half by a diagonal crease made in the
other. The first 'cushion' was designed by Paulo Mulatinho using two squares divided into 4x4 grids. Paulo called this design UFO. I realised that the same kind of design could be made from squares divided into many other grids, then that the designs would also work if the same grid was applied to any other rectangle. Tung Ken Lam subsequently realised that cushions need not be regular, greatly extending the number of possible designs. (Modular designs can be said to be regular when they are made from identical modules and irregular when they are not). In general grids up to 8x8 work well. Above this complexity the modules tend to hold together less well unless the folding is very accurate indeed. When the sides of a rectangle, other than a square, are divided into differing numbers of cells (eg 4x6) there are always two possible grids (ie 6x4 as well as 4x6). Additional grids can be created by splitting some cells or removing some crease lines from the grid. Online diagrams are available on the Modular Designs page of this site. 



Regular Cushions from squares  


Regular Cushions from silver rectangles  


Irregular Cushions from silver rectangles  

