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Maybe that accounts for all the knots, warping, beads of resin, and
ends which wane instead of staying square -- it's just too much
stretching! The pressure drives out the resin, and the grain tangles
up and makes knots, sort of like a rope when you twist it too much.
<br>
<br>
I thought April 1 came only once a year? When did it start to have
an echo? <br>
<br>
<small>susan</small><br>
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<br>
On 5/8/2012 7:31 AM, Ron Nossaman wrote:
<blockquote cite="mid:4FA92E26.8000302@cox.net" type="cite">You're
old too, remember when a 2X4 was 1-7/8 X 3-7/8? I do. Last I
looked, they had gotten down to 1-3/8 X 3-3/8. Personal lumber
stretchers went off the market when the high volume commercial
models were perfected. The story of a 2X4 losing 1/8" in milling
from rough to finish is true enough, but the continued reduction
in cross sectional dimension is due to the universal commercial
adoption of large volume, fast cycle lumber stretchers. It's
called a Poisson ratio. As the length is increased, the cross
section dimensions diminish. You can't make more material than is
there, but you can make it longer and thinner, and therefor sell
more lumber (by length) with less waste at more profit. I don't
expect a 2X4 to get much smaller, because they are about at the
limit of stretch before they start necking down too much in the
middle. I suspect this is why the small personal models aren't
sold anymore. People just didn't know when to quit, and blamed the
manufacturer for the ruined scrap they tried to over stretch into
usable lengths.
<br>
<br>
Ron N
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