Jack,

I have no idea about flutes. Don't take my word for anything. When I first saw this thread title, I thought you were talking about mushrooms and how they are weighed for sale. I couldn't figure out what it was all doing on a music thread. Then I figured it had to be about the bridge that Billy Joe McAlister jumped off. Then it was fipples and nipples, and then I lost my concentration. I hope whatever you are creating sounds great and that you make beautiful music with it.