FMCKQ Intro, Part two . . .

In my last post, I introduced the figure eight chain, a line that weaves around obstacles in an endless loop.

Draw figure eight chain
Draw figure eight chain

When you pivot a figure eight chain around to join the beginning to the end, an amazing thing happens. What was a single line turns into two, and you get a woven Celtic knot border:

3 x 3 border
3 x 3 border

Increase the length of the knot with an additional pair of obstacles:

3 x 4 border
3 x 4 border

Increase the length of the knot with an additional pair of obstacles:

3 x 5 border
3 x 5 border

Start with a square Celtic knot border:

4 x 4 border
4 x 4 border

Increase the length of the knot with an additional pair of obstacles:

4 x 5 border
4 x 5 border

It’s important to maintain an even number of obstacles for the lines to go around. If you remove a single obstacle, you get something unexpected: The knot reverts to a single-line figure eight chain.

Minus an obstacle
Minus an obstacle

If you remove a second obstacle, the border returns to two lines (albeit lopsided):

Minus two obstacles makes it right
Minus two obstacles makes it right

Can you think of how to put this to use? Please leave a comment and share your thoughts.

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