On 8/23/2011 1:15 PM, Reed wrote:
....

My daughter's house in CT built 1955 has the same problem. Original
hollow core (mahogany veneer over pine core) doors need planing/rasping
every year for the 8 years they've been in house. Plus re-mortising at
times

Can wood still "grow" after being cut, milled, etc ????

W/ a slab door it's not so hard to imagine since the full width is all
vertical grain for movement. Or, a composite interior could continue to
swell some. But even there for it to continue year after year seems
quite unusual.

No to the last question to anything other than movement owing to
changing of properties owing to primarily moisture equilibrium changes
and to a much lesser degree some temperature. "Real" wood growth
diameter happens only on the outer surface at the cambium layer under
the bark; the interior sap- and heartwood sections have already grown
all they ever will once the year's spring and fall growth season are
over the year they are produced; those never get any larger.

(Although there are instances of green lumber being harvested and
sprouting new growth if left enough intact and in nurturing-enough
conditions, mostly places like jungles, etc., that's not the case
certainly w/ processed lumber such as is in a door that as well as being
quite a long time removed from any living material still present has
likely been through a dry-kiln as well...)

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