news:7f40fdf4-8063-412d...@n8g2000vbb.googlegroups.com...
It's not because the wood doesn't take in moisture.
You really do need to try to focus here.
>> While plywood is somewhat more moisture resistant, any
>> persistent moisture will in time ruin both. However, if used properly
>> neither is exposed to excessive moisture so it's a moot point.
>
> It's water resistant enough that it won't crumble the first
> time it gets wet.
Ah, so paper is water resistant and that automatically means I can use it
for applications in which prolonged exposure to water occurs......
... NOT
>> > Standard plywood is nearly
>> > waterproof --
>>
>> No, standard plywood is water resistant, but so is OSB only not as much.
>>
>> > people have made bathtubs out of it, with
>> > no finish to protect the wood.
>>
>> BS.
>
> Tell the Japanese. It's standard design for soaking tubs.
However those no finish soaking tubs aren't made of plywood. Why is that do
you suppose?
Is it because plywood won't stand up to prolonged exposure to water?
I bet it is.
However, the Japanese haven't made that claim. You have. It's BS. Now if you
wish to show me cites to an unfinished tub made of plywood, I'm all ears.
Otherwise, it remains that plywood is merely water resistant and can't be
used in such applications.
>> A waterproof finish would be mandatory, and with a waterproof finish
>> EITHER
>> would serve as a building material for tubs just as well.
>
> Nope. Just keep the tub full. Remember why you never
> let the bilge on a boat go dry?
Which would simply destroy the plywood that much faster.
Really, you need to remember there is a difference between WOOD and PLYWOOD.
One is not the same thing as the other, and both have different properties.
>> Plywood is chosen
>> because it's cosmetically appealing, not because OSB couldn't serve the
>> same
>> function.
>
> For its strength and stability, resulting from cross lamination.
OSB also has cross lamination. So that's not it.
> It's also very economical to make,
OSB is more economical to make.
> since the veneers are cut
> with a rotary knife,
Well you mean other than the core of the large diameter old growth log from
which the veneers are cut. The fact that the core has to be a large diameter
log rather than the much smaller diameter logs that OSB uses.
>which produces a smooth finish
That a 'smooth finish' is purely relative, and that for any actual smooth
surface you would need to sand it.
>with zero
> waste.
BS.
In the veneer process above that you refer to, when the large diameter log
gets stripped down to a smaller diameter core....the core is removed and is
WASTE. Because the machine can no longer cut veneer from the smaller
diameter core that is left.
Then you have the wastes from the veneer clips, the panel trim, sander dust,
saw dust, etc.
Making plywood is not a zero waste process.
I will simply note that OSB produces less waste than making plywood but even
it still has waste.
>>
>> So what point are you attempting to make here
>>
>> >> >Does the carbon stay locked up?
>>
>> >> Sure, a landfill is a pretty good sequester cite given you can find
>> >> 100
>> >> year
>> >> old newspapers buried in the older ones.
>>
>> >> > Or is
>> >> > transformed into methane via the miracle of termite farts?
>>
>> >> Some of it is...but as a tree that has died in the woods, the same
>> >> thing
>> >> would happen.
>>
>> >> So again...what point are you attempting to make?
>>
>> > You wouldn't want to leave it longer?
>>
>> Leave what longer? A lack of point?
>
> The tree.
Why? We need wood more than that tree. So what valid reason is there to
leave it.
Oh, and plywood is worse for the ecology than is OSB because plywood
requires the use of much older trees, while OSB can be readily made from
young growth trees raised for that specific purpose.
>>> I think the lack of one has gone on long enough.
>>
>> Seems to me it's being shown that man's use of trees is NOT an issue as
>> long
>> as we maintain a healthy forest system.
>>
>> Now, do you have anything else, or shall we call this thread dead and
>> over
>> with?
I suppose this means you're out of valid points for why we shouldn't engage
in reasonable harvesting of trees?