Loop Guilloche, not as common as some of the other guilloche (plait) border patterns but still sen in a number of mosaics.
This download is a step by step guide of how to draw out this pattern. It can be adjusted to the size of tesserae (mosaic tile) that you intend to use. You do not need any skill in geometry, with a pencil and compass to use you will be taken through in easy to understand stages.
Included in this download;
1. Instructions, including a colour image of the pattern. 2. Step by step drawing guide.