By the end of Session #3, “square enough” QR modules were happening. So, in Session #4 we started trying to make rMQR components, starting with the black “finder” pattern i.e. the square that starts all rMQR codes:
Still all wool. The stuff we have is too stretchy. Perhaps worsted wool would work. That is not an experiment that has been conducted. We have since moved on to hemp and cotton. Cotton and lotus thread is all we will be work with in the foreseeable future.