(I hear you on the free/recycled/frugal diapering thing.
Mine didn't last like that either.)
I personally wouldn't cut on the bias. The poly PUL (usually the solid colours) does have a bit of stretch though not a ton. I'd try to keep the stretch in all my diaper layers going the same direction. Some do just plunk their pattern down however in order to get the most cuts out of a yard but I'd be too afraid. Hopefully someone else will weigh in with experience on the other side.

I personally wouldn't cut on the bias. The poly PUL (usually the solid colours) does have a bit of stretch though not a ton. I'd try to keep the stretch in all my diaper layers going the same direction. Some do just plunk their pattern down however in order to get the most cuts out of a yard but I'd be too afraid. Hopefully someone else will weigh in with experience on the other side.