I have a vague memory that the origin of the pattern was on an Egyptian patterned door, but it is a fairly common pattern and might have come from a number of sources.
This next exercise was carried out in order to explore the construction of a pattern I had noticed as having been drawn with a single, continuous line.
You can see there is some blotting at the beginning of lines – look at the red lines top right – as well as a little unevenness in line thickness.
I believe I never went over any lines twice as that had a considerable effect on the outcome.
The setting out is easily established, being based on four point geometry, the diagonal lines are all base on joining intersections with themselves and with the horizontal and vertical centering lines.
It’s a clever construction but one that would have been easy to set out.
It illustrates how readily adaptable these geometric designs might be.
Finally, this detail of one of the junctions illustrates one of the problems of joining lines at bends in the pattern.Why this should be so is difficult to say, but it is only when you take the trouble to make investigations such as this that you are able to learn something of the workings of the minds of the original designers.These two sketechs have been added as although they do not belong to the original drawings, I wanted to see how easily the sketch illustration, three above, could be worked up into – in the first instance – a relatively complex interweaving pattern.It is placed here to show something of the concentration that goes into study of this character of geometry as well as the accuracy I tried to maintain in drafting.Nowadays, drawing with computer programmes, there are still inaccuracies, but they are easier to deal with than when drawing with ink on paper.