Don't waste work!

I guess we all tend to waste a lot of effort on half-resolved ideas and experiments which end up buried in sketchbooks or discarded on the back of scrap envelopes. Some while ago I went to a short workshop on natural geometry, and had a lot of fun with compass and ruler revisiting the only bits  of maths O-level that really chimed with me (that and drawing nets). I tucked the notes in the cupboard and forgot all about it, until I broke the tile lid of a wooden box and decided to paint a gesso panel to replace it: an ideal opportunity to revisit the notes and do a little exercise in combining 'fourness' and 'threeness' in the manner of a medieval rose window. Jolly difficult too - not quite up to the standards of the cathedral architects yet, but at least the effort has not entirely gone to waste.