Ten minute block with cathedral roll centre. Can you believe that all these seams are straight except the simple top stitching?
I found the process on youtube from Suzanne McNeill's of Design originals.
She uses layer cake pieces which are 10in squares. I cut some 8 inch squares because that was the widest point of these two scrap fabrics I had, and it turned out like the large one above.
I liked that block, but wanted to increase the size of the centre, comparitively.
I made the small one with a 5 inch centre (because I'm thinking of making a quilt using this process with a rainbow charm pack in my stash!) and the outer squares are 3in ea.
I calculate that you need to make your centre square no larger than twice the length of you outer/smaller squares minus seam.
So if your outer squares are 3in.... 3+3-0.25-0.25-0.25-0.25= then 5 is the largest your centre square can be.
Seeing as there are four 1/4 inch seams, that makes 1 inch, so the easy way to calculate it is 3x2 -1=5 is the largest your centre square can be.
Here's Suzanne McNeill's video.
If you make one from seeing my blog, please email it to me at firstname.lastname@example.org !