If you are considering spinning with corn fibre at all (and I can't say that I would recommend it) here are a couple of things I've discovered today that you might want to bear in mind.
A - It doesn't block well. I had a feeling this might be the case is it has none of the stretch or memory of wool. I was right. The mystery object (it's for a competition remember, to be judged anonymously) looked great on the blocking board but as soon as I took it off it reverted pretty much immediately to it's previous unblocked state. And the edges curled in.
B - You know when you have a really bright idea to fix a problem. I had one of those. I thought if I steam pressed the edges they would stop rolling in and look better. Here's where I learned the other thing you really need to know about corn fibre. IT MELTS!!!