My Lace-Tesselation patterns do have gaps to create 'negative space' which creates 'lace'.
This following example is my HOUNDSTOOTH design.....the design that started all my interest in pattern/repetition/tesselation.
The BASIC DESIGN ELEMENT is this:
A TRUE TESSELATION Pattern would look like this:
My LACE-TESSELATION Pattern looks like this:
I can also manipulate the Basic Design Element to form other patterns such as:
All these patterns and more are featured in my upcoming book: MORE Fun with Split Ring Tatting