Originally Posted by
jeanneb52
The seam allowances don't matter on PP as far I can see....you've already sewn the seam before you trim. The ruler is only neccesary to the seller. Profit. Ever notcie how many unnecessary tools are on that list???
This makes me wonder how you're using yours. I always use mine to trim the seam allowance before I sew. I fold the paper back (around a straight piece of template plastic to give me that sharp line) along the seam line I intend to sew next. Then I butt my add-a-quarter ruler along that folded paper and trim my seam allowance which provides me a guide for the next piece of fabric. I can't think of using it after I've sewed and am interested to hear about your method, especially if it's nice and fast. The other thing I like about the trimmed seams is that when there are a lot of them, the trimming helps keep the bulk down on the back.