Originally Posted by
117becca
it's a 1/4" - I don't think it's a big enough discrepancy to add a "border". To me, that screams "Look at me, this block is messed up"
When sewing the 2 blocks together, using the correctly sized block as your guide, place the smaller block on top of the larger block, centering it. When you sew your seam, use the larger block to sew 1/4". The smaller block will probably have only 1/8" inch seam.
When you turn your block over, you will never know.
I agree with becca. Fudge it a little on both sides and it will work. Also remember to put the bigger piece on the bottom as it feeds through the machine and that will help take up the "extra". By the time this is quilted, the smaller seam will be stablized and only you know what's underneath. For 1/4" inch I think you can make this work. Fabric is flexible.