A method of creating "Celtic" interlaced patterns.
Roll your mouse over the thumbnails to see the instructions or click on the thumbnails to see larger, slightly fuzzy, images and the instructions.

startwithasimplegridofdots_small.jpg connectaquadofdiagonaldots_small.jpg connectanotherquadatrightanglestothefirstset_small.jpg
fillintherestofthepatternexcepttheedges_small.jpg stareintentlyuntilyouseehowtheedgesshouldweave_small.jpg addinteriordividinglinestotheoriginalgridmoreinteresting_small.jpg

You can also make irregular rectangular shapes. Just remember to "bounce off the edges and walls" to make your turns correctly. Although you don't have to, using graph paper makes practicing easy.
Have fun!

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Last revised March 31st., 2006. Comments to: E. A. Young