Just a note from things I've learned from woodturning. If you plan on storing a board for a long period of time to let it dry or whatever, look into a product called Anchor-Seal or anything along those lines. Rockler sells a product called "Green Wood End Sealer" that is basically the same. coat your board, especially the end grain surfaces, with said product and then store it.
Here's the thing about wood grain that helped me really understand the "why and how" of cracks from drying:
The reason wood cracks as it dries is because it is drying at different rates (or speeds) depending on grain direction. If you can control the rate of moisture loss and somehow equalize that rate of moisture loss in all grain directions, it will crack much less, or maybe not at all. Same goes for movement, it moves because the long grain is drying faster than the cross grain (or vice versa).
Think of the wood grain as a bunch of straws all laid in a pile, all running in the same direction. The moisture in that wood grain will leak out the ends of the fibers faster than it will out the sides. Or, in idiot terms; the liquid runs out the ends of the straw way faster than it leaks out the sides of the straw. If you cut that pile of straws in half, making two piles of shorter straws, it will leak out those new ends faster than it will the sides too. So, you want to use the end grain sealer products to "cap" the ends of the straws and thus control the rate of moisture loss.
If I get a new wood turning blank that I don't know where it came from, I will make a fresh cut on the end grain to basically open those straw ends up, then seal it with the end grain sealer so that I know it is sealed in the manner I want it to be. Or, if it is a freshly harvested tree that I just cut up, I just seal it since the end grain is freshly opened. Keeping in mind that sealing also adds length to your drying times. But you're trading time for stability, it's up to you to decide what is more important. I've got some blanks currently stacked in my garage that will probably take a couple years. It's an investment in my turning future.
That's probably the best contribution I can make to this thread, so take it for what it's worth.
