WoodDrying.net
Follow green wood until it's dry enough to work.
Freshly cut wood is full of water. Dry it too fast and it cracks, too slowly and it can rot or stain. WoodDrying.net keeps a record of each bowl blank, slab or plank: register the piece, weigh it (or read its moisture) every now and then, and see on a chart how fast it's losing water. When the weight stops dropping, the wood is dry.