We need to bust up some manure and hay piles this spring, so I've about convinced myself to build a chain harrow. Not just pieces of chain or fence, but with actual teeth. I can get two 6.5x4' sections of the chain assembly for $580 shipped, and I'm contemplating building a folding 12' three point harrow. I thought about building a solid framed spike harrow, but I don't think it would follow the ground as well and would probably cost more.
Any thoughts, or suggestions on where to get the chin sections cheaper? I've been watching Craigslist, but not much turns up. I found a 15' S tine harrow for $150, but it's seven hours away and is missing all the S tines.