Binding question
 

I do not know of any formula, but I try to do a quick go around and see if any are going to fall on the corner and if so adjust the start point a few inches, to avoid that happening.

I know it's not what we are told to do, but I rarely measure my binding in advance. If the binding seam is going to come out at a corner, I cut some out to fix the problem.

I always lay my binding out on the quilt and adjust it so no seams end up on a corner.

If there is a formula, I don't know it.:) I start with a pin in the middle of one side and loosely measure around the perimeter to check that no seams land in the corners. If needed, I adjust where the strip starts.

I have been pinning binding all around the quilt and adjusting to make sure that a seam doesn't fall right on a corner. QM made the light bulb come on for me! Next time I might just do that -- cut and adjust the seam as I sew if it's going to hit on a corner.

I do the same thing. It's pretty easy to take out a few inches to avoid having the seam in a corner.

I do the same thing as Tartan does....audition where the seams are landing on the quilt. If any of the seams land on the corner, then I move the binding a few inches or more as needed. Sometimes the quilt may be uneven for one reason or other. For example, if one side is half an inch shorter than the opposite side, I would use the measurement of the shorter side and ease in the opposite side so that both the sides are the same length after the binding is done. Hope this makes sense.

I mostly use rounded corners and avoid mitering altogether. I love doing binding this way (of course you have to use bias which I am fine with).

This is where the little Clover red binding clips come into their own. You only need to use 2 or 3 each side round your quilt, to roughly see where the joins will lie. I use one to do a rough mitre fold at each corner.

Much quicker (and much less 'stabbier') than pins. The flat hairclips will work just as well for this.