This is the first in a series of blog posts exploring simple Celtic knot bands. “2 by” refers to the fact that these knots are two sections wide, and an increasing number of sections long. A later blog post will introduce breaks in these knots.
Each example will display a line drawing of the knot, and a colored version. The colored version features three basic shapes (corners, curves, and bars) with a bit of space added between them, and the colors illustrate how many strands are in each knot.
2 by 2 knotted band: four corners; two colors.
2 by 3 knotted band: four corners, two curves, one bar; one color.
2 by 4 knotted band: four corners, four curves, two bars; two colors.
2 by 5 knotted band: four corners, six curves, three bars; one color.
(Edited to remove extraneous examples)
Did you notice anything about these examples?
When both width and length are even-numbered, they produce two-color knots; the knots are actually two separate strands, woven together. When one dimension is odd-numbered and the other dimension is even-numbered, they produce one-color knots.
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