I've seen a quilt made with a bali striped fabric that is cut on the diagonal and then reassembled into a chevron pattern. Can anyone help me figure out how this is done and how much fabric I'd need?

I think you might be talking about a French Braid?

no this was made with a single piece of striped fabric, the chevrons were made when the stripes rejoined

I know this isn't what you were asking for, but some neat things shown for stripes here. I just typed in stripes to the forum search and found a few others.
http://cadouri-din-inima.blogspot.co...h-stripes.html

A chevron like one of the blocks in this quilt? Lower right?

Every block was made with the same one fabric.

Love your avatar!

I think this may be what you are looking for
http://www.mccallsquilting.com/articles/batik_illusion
I've been captivated by it ever since it arrived in my mailbox.
Anita

Yay Anita! That's it! I knew I could count on the people on this board!

That site was a lightbulb moment for me.
thanks for sharing.

Rita