Several people have asked what size my triangles are. I am cutting them with my Studio die. It looks like if you were doing them manually, you would be cutting 4" strips and cutting on the 60 degree line with your ruler.
I can cut 10 triangles at a time, 12 layers thick, so 120 triangles with one crank through the cutter. I spread the pieces out here so you can see the shapes better. I started out in my quiltmaking drawing around a cardboard template and cutting 1-2 layers at a time with scissors. I have paid my dues. 50+ years later I am doing it an easier way.
This may not look any different from yesterday's photo, but the top 8 rows are all sewn together now. 8 rows = 25". 13 rows would make a 41" square wallhanging, 299 triangles. Just figuring out loud here.