Square in a square block
Hi everyone! I have some little star blocks that are 3 1/2 inches, including seam allowance, that I want to turn into square in a square block. Can anyone tell me what size squares I need to cut for the triangles to sew to each side. I tried an online calculator but that gave me wrong info. I then just tried a 3" square and that seemed to work, but I'd like to do it the right way. Thanks for any help!