This was the last letter completed (although I am still fiddling with the letter ‘O’) because I knew I wanted to use inspiration from John Hensel’s Book of Ornamental Knots but misplaced it a for good long while (sadly there seems to be distinct theme there). Using one of the epaulet type knots (will look up and correct later) for the crossbar merged with the infinitely extensible prolong knot for the stem, it ended up looking pretty much as envisaged. It felt quite like mathematical knotwork when pulling and stretching the cord during stem construction.