# origami (designed and folded by Helena Verrill)

This page was created in 2019. Since September 2019, I have been putting up images of my origami on instagram @havtofold instead of here. I have also recently written another paper. I gave this talk on some of my designs at the February 2020 origami creators conference.
See also some programs for playing with water bomb base tessellations.

The following is a summary of the pdf files which are linked to from this page, for easy reference. The most detailed instructions are the polyhedra unit instructions.

## Origami tessellsations

### Origami square on cross sequence (March 2019)

 Each sheet folded from 15cm square origami tant paper. This sequence can be continued, as explained in the description of the crease pattern. click on image for crease pattern/description

### Origami Herring bone developments (April 2019)

This was inspired by attending the BOS convention, April 2019. This is not so much a sequence, more origami's on a related theme. The first was something I brought to show, and the rest constructed afterwards.

### Brick wall / square twist / square weave variations (May 2019)

This is a very elementary tessellation, but for completeness I felt I had to make a though investigation of variations on this simple theme. Some folded examples are here, and the paper you can download by clicking on the last image in the row has diagrams of up to 100 cases. Actually there are some repeats, so not quite 100, but quite a lot!

### More Brick wall variations (June 2019)

Another variation of the brick wall. This time, I don't change the direction of creases, (except in one, which I couldn't resist; necessary for flat folding), but rather changed size of the rectangular bricks. Click last image for a description

### Polyhedra unit (August 2019)

This is not a tessellation, and it was designed quite a long time ago. But it's useful for displaying flat tessellations which reduce area to 1/4 - there are quite a lot of these, especially those based on square twist or pinwheel. They slip into the square faces, which are like frames.
Also, I wrote these up recently for the MOVES conference at MOMATH in New York in August. Instructions here.

### Steps corrugations (September 2019)

These are based on the pinwheel unit. File with more images and crease patterns.

Exhibiting...

### Old work

You can find my old pages on the make origami pages.