Chain stands for chain mail. I play RPGs and chain is a kind of armor. Heavy means that it is tightly interwoven.
Another experiment. I made a grid out of the pinwheel shapes, then started drawing on it. Not sure why the bugged glyph count... hope nothing goes wrong...
Try viewing at 2x Pixel size to see how it is intended to look!
Type one of `|\^ then a letter to texture the background as well!
Type _ to create the blank pattern between letters.
Original size: 51pt (use multiples of this value for pixel perfection)
1. Alphabetic glyphs must fill the pinwheel grid space as much as possible.
2. The pinwheels must not touch any letter's perimeter line. Nor must they deviate from their formation, except when being deleted to make room for the perimeter lines.
3. 90-degree angles only.