Originally Posted by
ckcowl
You multiply the size of your blocks by 1.414 for the side setting triangles, cut your squares that size then cut them diagonally twice (X). For the corners you divide by 1.414 cut your squares and cut them in half diagonally.
This is what I do and it works like a charm. Since you will have some bias edges I starch my fabric first to give it some stability. You may need to trim a bit once they are set. Don't let the formula scare you. Just plug the numbers into a calculator and I round up to the next 1/4" to make it easy. So in other words if your answer comes out as 3.192 I would cut my square as 3.25 (3 1/4) and then trim once it is set.