Originally Posted by mom-6
I thought the angled seam was for bias so you always had the seam on the straight grain of the fabric. My home ec teacher explained it that way back when...
So if I'm doing a straight grain of the fabric binding I do a straight seam, and if I'm doing a bias binding I do an angled seam.
I think the question refers to how the seam goes/appears on the finished piece.
If one is doing angled joins:
If the binding fabric is cut on the "straight of grain" - then the "joining seam" ends would be cut on the bias (45 degree angle)
If the binding fabric is cut on a 45 degree angle, the "joining seam" ends would be cut on the straight of grain.
I don't know if the actual seam is "stronger" - but it does spread it out over a longer length - and it definitely makes the joined area less bulky and chunky looking.
But if one is down to the last little bit of fabric - one does what one has to do.
Attached is a drawing to try to illustrate what I mean. Pretend the blue lines of the graph paper are the way that the threads are woven.