Hour Glass Block--for finished 8.5 size, what should my starting square size be??
I've been searching to find this out and can't find a reference anywhere. Anyway, I need to end up with a block 8.5 inches in size. I will be making an hourglass out of 2 fabrics and will place the fabrics together correct sides together and sew diagonally on each side of the diagonal line then cut and match the opposite pieces together to form the hourglass. What size do I need to cut my 2 squares to arrive at a 8.5 hourglass--I always like to have about 1/4 inch to trim to make a perfectly sized block.
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When you say finished block, are you including the seam allowance? So the ending size of the block is 8"? If yes, the technically "correct" starting measurement for the squares is 9 1/4". To leave some extra to square up the blocks , start with 9 1/2. In other words, start with squares 1 1/2" larger than the finished size of your block, finished size excluding seam allowances to sew the blocks to each other.
Here's a link to a calculator http://www.patchwork-and-quilting.co...triangles.html |
Cut your plain squares at 9.5"
You will trim the block segment after you have completely sewn it into an hourglass so that it is 8.5". Jan in VA |
Originally Posted by AngelinaMaria
(Post 4855822)
I've been searching to find this out and can't find a reference anywhere. Anyway, I need to end up with a block 8.5 inches in size. I will be making an hourglass out of 2 fabrics and will place the fabrics together correct sides together and sew diagonally on each side of the diagonal line then cut and match the opposite pieces together to form the hourglass. What size do I need to cut my 2 squares to arrive at a 8.5 hourglass--I always like to have about 1/4 inch to trim to make a perfectly sized block.
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