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Thread: I am shocked. Shocked I say
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16th May 2009, 09:05 PM #1SENIOR MEMBER
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I am shocked. Shocked I say
I'm new to cutting wood.
Is this what one should expect of Pinus Radiata?
I ripped this 2m length of pine on my tablesaw, and it instantly assumed those conflicting bows. I can squeeze the two together with one hand, but only just.
I shaved the arris off a few other lengths with no untoward happenings.
PS That image is 600x800, too big for the forum software which limits images to 800x600, so I've placed it on my own site. Oh, it's fuzzy because the exposure was 1/6 seconds, hand-held, no flash.Last edited by Big Shed; 16th May 2009 at 09:33 PM. Reason: Reduced externally posted photo to 600 high and attached
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16th May 2009 09:05 PM # ADSGoogle Adsense Advertisement
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16th May 2009, 09:16 PM #2
John, as I explained here, max width is 800 max height is 600. Your width is 600, so OK, however your height is 800, too big.
On top of all that, you can't exceed 100k, or it won't allow the picture either.
So, to get a postable picture, set your max height for a vertical/portrait format photo to 600 and you won't be caught by the vBulletin software
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16th May 2009, 09:16 PM #3
Yep that's about right, it's also called twistus radiata. you've released some inbuilt stresses. Take heart it also happens with expensive timber too.
cheers
Michael
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17th May 2009, 07:17 AM #4SENIOR MEMBER
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This happens occasionally.
It was dried too quickly, the inside was left in tension while the outside was left in compression.
When it was one single piece, the compressive stresses on both edges cancelled each other out.
When you ripped it in half, you created an 2x2 that had compressive forces on one side and tension on the other. It then just bent to match (technical term is 'spring')
This phenomenon is called case hardening of timber.
Cheers,
eddie
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17th May 2009, 10:54 AM #5SENIOR MEMBER
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17th May 2009, 11:00 AM #6SENIOR MEMBER
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17th May 2009, 11:57 AM #7
Typical of Radiata Pine.
One mill that I know of used to mill & pack it as soon as it was cut, then spray the packs with water until it left their yard so that it didn't dry out and deform until it went out. Nowadays, they pack it in plastic for the same reason. I suspect that most mills do this with radiata.
"It was in perfect condition when it left our hands."
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17th May 2009, 12:19 PM #8Jim
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It's one of those things that make working with wood such a pleasure
Jim
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17th May 2009, 01:00 PM #9SENIOR MEMBER
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I milled the pine for my house dressed the faces then cut to ~length and flicked it with a sting line and ripped with the table saw (should have just recut with Lucas) then dressed edges. The chippie was twisting the first board from side to side. I said it should be straight he said it is "so what's the trouble" We put all the spring in the same direction " don't bother they are all straight" He was shocked he had never seen straight pine before. We had 1 - 8" x 2" that wasn't able to be straightened I was going to buy a replacement but was told you could not buy one that was any straighter.
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17th May 2009, 02:30 PM #10Deceased
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17th May 2009, 03:44 PM #11Jim
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17th May 2009, 05:26 PM #12SENIOR MEMBER
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Not so good for the readers turning their heads on side to read the label on the Titebond bottle.
Maybe not so critical this time, but I hate trying to read stuff in the wrong orientation, and I don't like broken software either.
Fortunately, DJ's Timber has isolated and fixed the bug.
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