Do you get this magazine? I got mine on Saturday and sat down to read. There is an article inside that really sparked my interest. It is unfortunate that the article is not even listed on the website's table of contents for this issue, but it is An Extra Eighth Goes a Long Way by Marie A. Dellapiazza. The premise is to add an extra 1/8 inch to cutting and seaming and she gives some formulas for the commonly used HST and QST. I love, love, love this idea! And I think that if you are not swapping blocks and as long as the seam depths are consistent throughout your quilt, what does it matter that the end result of the quilt is a different size?
I actually use this concept when working with flannels, only I never thought about cutting 1/8 inch bigger. DOH! (insert sound of hand slapping forehead). And I wish I had thought of using this with all those homespuns I've been working with lately. Both of these are loosely woven fabrics and can benefit with a deeper seam.