I finished lesson #9 and it's made up of more half square triangles. If I didn't have the awesome June Tailor ruler I'm sure that I would dread making them but it's my favorite tool right now. This 3-block grouping is also the first one that I've used Aurifil 50 weight thread and I LOVE IT! I used Mettler cotton thread on all of my previous blocks but it was leaving so much lint in my sewing machine so I was on the hunt for some better thread. Yes, Aurifil can be a bit pricey but it is so worth it. It's so thin and I feel like that alone has improved my accuracy. And it leaves very little lint which makes me very happy. Just like this lesson.