Knowing that I need 1/4" seam allowances, I cut all the squares at 3 1/2" x 3 1/2". Then I cut more of the same size and just cut them in half for the diagonals. This is the result:
The pieces with the triangles ended up being MUCH smaller than just the block pieces. Which bothers me, because when I was cutting the blocks I wondered if there would be a difference, so I checked in the Grandma's Best book (the one that had this pattern), and couldn't find anything on it. Now, doing research AFTER the fact, I found this in The Joy of Quilting:
"Cut a square once diagonally to yield two half-square trianges...To determine
the size square to be cut, add 7/8" to the finished short side of a
triangle. For example, to cut two triangles with a finished short side of 3",
cut a square 3 7/8""
So now I'm at a loss. I'm wondering if I can decrease their seams to 1/8" and up the ones on the squares to make it more "even". Also I'm looking at the Joy book and seeing that the side and corner triangles I cut to frame the "block" portion of the quilt may also be to small. . .