I like to use examples that most people know something about.. like why carpenters dont glue long wood planks together and while also nailing to the floor beams when makeing an old fashioned wood plank floor. Or why they always leave an inch or so around the wall edges. I ask them to imagine what they think would happen to their house if such a floor had been installed. Then I relate that to the idea that pianos use exactly this capacity of wood as a design feature, a feature that needs to be kept somewhat under controll for the idea to "work" right. Sticking doors are also a good one.. -- Richard Brekne Associate PTG, N.P.T.F. Bergen, Norway
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