Originally Posted by
Pinkiris
One of our smart math ladies can probably tell us--for example, if I'm adding a piece to a 2.5" border and using a diagonal seam to piece it into the middle of a too-short border, how long does that piece need to be? Rachel's original border was 60.5" and needed to be 62". How long a piece does she need to add in the middle if piecing it in on the diagonal?
One of you smart gals must have a formula for each extra inch that we need to add in this manner. I know there's some algebra in there somewhere!
In the past, I've added a longer piece into the middle and then trimmed the ends equally. But if I was ever short on fabric, I'd be in trouble!!!
If your border is 2.5 inches wide you'll lose a 2.5 inch square for every diagonal seam. 6.5 inches, lose a 6.5 inch square, etc, etc. Plus the seam allowance.