I finally managed to put together a chart for the Threads That Bind Doily.
This would be the largest tatting chart that I have drawn (14 rounds). It was not easy; I had to restart a few few times because the rings and chains didn't come out in proportion to each other the way I like them to be.
I have posted pictorial instructions for the doily in several posts when the tat-along was on. This final post will be for completeness.
I hope the chart is clear enough to read the stitch counts. Opening the image in a new tab may enlarge it.