Pieced Backing Advice
 

I'm working on a sashed QAYG throw which I had planned to be 5x6 rows/columns with 9.5" blocks. I purchased a layer cake in the same line to use as the back of each block. Each of the blocks was comprised of 4 square paper pieced identical sub-units. It was only after I'd completed about 20 of the sub-units that I realized I had printed the paper piecing pattern at 6.5" instead of 5.0" (unfinished size). As a result of that error, my completed blocks will be 12" rather than 9.0". So now, I've decided to make it 4x4 rows and add a bigger border. However, I need to figure out a way to convert 40 10" squares of fabric into 16 12.5" (unfinished) squares. I thought since I have 40 10" squares and 2 squares per fabric, I could cut 2 3x10" strips from each duplicate and and sew them on each side of the square with a corner square that matches my sashing, like the following picture. Does anyone have a simpler or more interesting idea that I can do. I generally prefer to spend less time on my backing squares than on the front when doing a QAYG project, so I'm looking for something quick. Thanks in advance.

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Your idea is good, but I think I would go with Lynnie's. Either buy more or use something else you have and recut as per your pattern.

I would also save the layer cake for a different project and purchase yardage. Not sure what the front block will be like, but using yardage will also avoid extra bulk when seams from the front & back intersect.

Thank you for the great advice. I looked at my total yardage and found that I had extra of the cream print that I am using to sash the back. I don't have enough to do the whole back and even if I did, I'd need to cut it in 12.5" squares for the QAYG. Here is my current plan for the back. I don't think the extra seams will be a problem since I've done other QAYG throws with a couple of seams in the backing of each block.

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You go, girl!

My advice: save the layer cake and go shopping in your stash first, then elsewhere.

I think I would save the layer cake for a future quilt and hunt for one fabric piece for the back.

The throw is a Quilt As You Go (QAYG) project which requires the backing to be cut into 12.5" squares and 1" sashing. If I have to cut up the back, I like it to look interesting. If I discard the QAYG plan and send it out to a long armer it will cost another $100. Here is the back of another throw I made using part of a 6-pack. I was just hoping someone would suggest a simple block that I could do to help me correct my mistake. Thank you.

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