Thanks everyone, I was going to miter the corners. You are right dunster, the inner border fabric would go all the way to the top and look odd, never even thought about that! Was just trying to find a faster/easier way of adding a border. LOL Shortcuts generally get me into trouble!

I have done it, but only if I am putting a block in each corner. Otherwise can end up looking a bit different where the come together, but not bad.

I sew the borders together and then to the quilt. It gives me better stability and control. I've done it on all my quilts irregardless of corner type.

every time I do that, something goes wrong. So, gave up and do them one at a time

It's easier when you work with narrow borders to put them all together and then attach a larger border to the main quilt top. But there's no wrong way, just what works better for you.

This is what I do also :-D

Only when I miter.

Oops, sorry :(

One at a time; you get a different look if you try to sew them together first and then to the quilt.

Besides for mitered corners the other time this method works is if you have big cornerstones. They could be a solid block or some pattern in each corner. Look at my avatar. I did it that way in the actual quilt