Originally Posted by MTS

That math isn't working for me.

D9P - this guy? Just so we're all talking about the same thing.
http://valentinequiltworks.blogspot....tch-quilt.html

I've never made one but it's clear you have 3 seams (2 from joining the squares plus one from resewing after the cut), plus the outside seam allowances.

So whatever you started out with, you would always end up with a finished block 2" less than the sum of the 3 cut squares.

3" cut squares = 7" finished
4" cut squares = 10" finished
5" cut squares = 13" finished

Or am I missing something?