|Four of the 8.75 inch grannies|
Not a bad size, but I wondered - as did someone else in the discussion group - what sizes were needed to create a 12 inch finished square.
So after doing a little math I came up with the squares have to be cut at 3.25 inches. Since I prefer the set in triangle method for doing these, the corner triangles are cut from a 3.25 inch square cut once on the diagonal. For the side triangles, I cut 1 5.25 inch square, which I cut along each diagonal into 4 triangles. (I actually had calculated more like 5.5 inches, but didn't realize I cut it short until I was well into sewing the block. Since this was an experiment, I kept going.)
I sewed it together - after trimming, I ended up with 12 3/8 inches, which is 1/8 inch short, but still enough to finish at 12 inches - you'd have to sew a very scant 1/4 inch. I would recommend cutting the 4 side triangles from a 5 3/8 or even a 5.5 inch square. Then I think you about guaranteed a 12.5 inch trimmed block.
|12 inch Granny Square.|