I looked into the piano thing a couple weeks ago and then I read this thread and I scored a basket case of a Baby Grand later that day.
First I gave the sound board a quick inspection making sure it wasn't cracked that way when I took it apart it didn't fold up on me from the string pressure.
Separating it from the wood went pretty good with the Sawzall and a large sledge hammer.
I ended up with around 12 pounds of Yellow Brass and I'm not sure about the exact weight of the sound board but I'm guessing 275 I left the strings on it and it went into misc scrap. I would say I had at most an hour and a half into it and that includes driving and loading time.