They certainly came out nice and neat.
I'm oscillating between plywood and OSB for the middle part of the mold. I have so much going on in my life now that I don't believe it really matters either way. We have plenty of copper, resin, and I really don't care if this mold survives. I do hope it comes off the stator, but I think the experiences from first time, around on my own, count for a lot. We did our first turbine in an OtherPower workshop, it was beautiful, the second one very ugly, but it did work and gave us two years of energy for our entertainment system, and that also counts for a lot in my book.
Like I said "oscillating," fitting I think. The OSB, as I sat and thought about the pros and cons isn't all that bad. I put a caliper on the OSB, it read 1/2 inch. Perhaps it was swollen, I don't know, the outer 3/4 inch plywood concerns me most as it still has a slight warp to it. I will really need to squish the mold with "C" clamps to straighten it, and then it still feels like a crap shoot.
I thought I would go to Wallyworld (the only store in town) and look for a thin sheet of polyurethane for the top and bottom, but then I thought, it is the sides that will undoubtedly stick, and there is no way that I can think of to secure a strip of polyurethane to the inside edge of the mold. If I can, today I will dope up the mold with the Silicone II caulk I bought, and let it dry for a few days.
I have time, I'll wait and see how it looks