> Let me understand this. You have a piece of wood with a hole drilled in > the middle. You saturate it with water and the wood expands away from the > hole and the hole gets larger. Now lets drill five holes in a close > pattern. Saturate the wood with water. Now the wood expands away from the > hole, except when expanding away from the hole directs the expansion toward > another hole. The expansion stops short of the adjacent hole and reverses > direction in order that that hole will also get larger. Doesn't make > sense. Visualize the five holes drawn on the surface of a balloon and then blow it up. Gerald
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