Author: vboboe
Date: 2006-07-26 17:32
dear wrowand
Sigh, a meeting of minds discussion this might be if t'other end's comprehension of my expressively complex writing style perks up ... is it a mind-frying scorcher where you are too? (today's cooler here, whew)
Oh, and sorry, wrowand, i completely forgot earlier to thank you for doing the math, that was very helpful & informative :-)
<<I'll take this point by point. First, are you saying that a smaller distance between fibers correlates to an increased susceptibility to cracking?>>
No (although we could go off on another wild tangent?)
<<Or is it just the opposite. >>
No (ditto comment)
I'm saying "change relative mental perspective from macroscopic to microscopic" the way i read you was that you think the expansion math figures are too small a change and therefore insignificant to the cracking issue. Instead, you brought up valid point about moisture content in the wood as the real problem, more below.
<<Or are you saying that somehow the expansion of the metal posts puts more stress on wood(.) that is close grained. >>
No, and here's a clue, Not Exactly, stop the thought at (.) and delete the other concept (although we could go off on another wild tangent with it?)
<<Second, this is the first I've heard of anyone playing oboe close to an open flame. Best of luck with that.>>
LOL, puhleese, *metaphorically speaking* ... capiche?
<<My point in the original posting is that I think your warning about "the real problem is what happens when metal fittings heat up rapidly and expand inside their sockets in the wood" is not the real problem at all. The real problem is differences in moisture content across the wood.>>
I agreed already that * extreme changes in moisture content of the wood * is a very important concern re cracking, rather than the specific expansion process itself, but heat expansion and radiant heat of metal posts simply don't happen in a vacuum, everything's interconnected
... so now i'm frustrated, because you don't seem to be getting my point, and furthermore, seem to be taking the position that i'm not getting yours, even when i've written in agreement with it, and further developed both of our original ideas as a result of your valuable input
My point is that really hot metal post expansion does affect moisture content in wood, this is very significant to wood fibres, and does contribute to cracking in wood, fine grained or otherwise
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