Trying to get the dog to play it so he can be a huge hit on YouTube, but he's not very interested.
Thanks for all the comments on yesterday's post! I should have mentioned that the stencil is about 45cm across. What you couldn't see was the really impressive maths part of it. For unfathomable 'artistic' reasons I wanted to divide the circle into sixths, rather than quarters or eighths that I could have determined by simple folding. Had to call in people with engineering degrees, and google sines and cosines, and have resolved to buy a protractor before the next one.