Grin... caught you off guard with that one... Its just that I seem to remember that on the PTG writen exam the question comes up... in which way does the panel grow/shink the most with climatic changes... and the answer was "in thickness". Perhaps a bit off the origional question... but you know me... hehe. Cheers RicB Farrell wrote: >What the f....... > >Thickness???? Hmmm, well, I guess we are talking about a 3% change in length >under the conditions described. If the panel is 8 mm thick - and let's say >5% change in size because it expands more in the thickness direction than >cross grain on a quater-sawn panel - maybe we could see 0.4 mm change? That >seems like a lot! But in the end, what is the difference, given the >question - how long does it take for a panel to react? Am I missing >something? Regardless of what happens during the reaction to a change in >relative humidity, isn't it the rate of change that was in question? > >Terry Farrell > > > > > >>Yo >>
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