The Forestry Forum

General Forestry => Sawmills and Milling => Topic started by: Ianab on January 09, 2018, 04:29:02 AM

Title: Growth Rings, I'll just leave this here.
Post by: Ianab on January 09, 2018, 04:29:02 AM
That's a full size 4x2 Radiata Pine.  Actually dried nice and straight, has had a dip in a borate bath, and is now holding up my workshop wall.

(https://forestryforum.com/gallery/albums/userpics/10460/20180107_164207.jpg?easyrotate_cache=1515490068)


Title: Re: Growth Rings, I'll just leave this here.
Post by: Chuck White on January 09, 2018, 06:35:08 AM
Wow, that's a lot of growth, about an inch per year! 
Title: Re: Growth Rings, I'll just leave this here.
Post by: Weekend_Sawyer on January 09, 2018, 06:48:51 AM
I bet you could just about see that tree growing!
Title: Re: Growth Rings, I'll just leave this here.
Post by: hunz on January 09, 2018, 08:32:36 AM
Judging by all the radiata I just installed for trim in my house, that's flat out astonishing! I imagine it was in the middle of a 100 acre field all by itself. Ha
Title: Re: Growth Rings, I'll just leave this here.
Post by: Darrel on January 09, 2018, 09:08:36 AM
Somebody imported about 30,000 BF of pine that looked like that from NZ and brought it to the planing mill where I worked.  It was random width 6/4 with the widest being about 24".  I ran it all through that big 14 knife per head Yates American planer, s2s in about 5 hrs.  I think some of the growth rings were even wider than what you have there. 

I couldn't believe how flat and straight it was.
Title: Re: Growth Rings, I'll just leave this here.
Post by: btulloh on January 09, 2018, 09:18:30 AM
Pretty amazing.  Jack's beanstalk didn't grow much faster than that.
Title: Re: Growth Rings, I'll just leave this here.
Post by: Ljohnsaw on January 09, 2018, 09:43:52 AM
Quote from: Weekend_Sawyer on January 09, 2018, 06:48:51 AM
I bet you could just about see that tree growing!
I'd think you could *hear* it growing - creaking and groaning! :D
Title: Re: Growth Rings, I'll just leave this here.
Post by: POSTON WIDEHEAD on January 09, 2018, 10:05:26 AM
$30
Title: Re: Growth Rings, I'll just leave this here.
Post by: Darrel on January 09, 2018, 10:45:42 AM
Quote from: POSTONLT40HD on January 09, 2018, 10:05:26 AM
$30

Quick! That's a 90% discount!!! 8) 8) 8) 8) 8)
Title: Re: Growth Rings, I'll just leave this here.
Post by: brad918 on January 09, 2018, 12:50:45 PM
Impressive growth! Here is the opposite end of the spectrum.

(https://forestryforum.com/gallery/albums/userpics/43923/IMG_3893~0.JPG)
Title: Re: Growth Rings, I'll just leave this here.
Post by: Jeff on January 09, 2018, 01:11:02 PM
Quote from: Chuck White on January 09, 2018, 06:35:08 AM
Wow, that's a lot of growth, about an inch per year!

Actually, 2 inches per yer as you are only looking at one side of the tree there.
Title: Re: Growth Rings, I'll just leave this here.
Post by: YellowHammer on January 09, 2018, 01:27:39 PM
Some serious steroids going on in that pine. :D
Title: Re: Growth Rings, I'll just leave this here.
Post by: Darrel on January 09, 2018, 01:49:24 PM
Quote from: brad918 on January 09, 2018, 12:50:45 PM
Impressive growth! Here is the opposite end of the spectrum.

(https://forestryforum.com/gallery/albums/userpics/43923/IMG_3893~0.JPG)

On the opposite end of the spectrum, I have 6" DABH Pondarosa pine on my property that are over 100 years old.

And FWIW, someone split the pith.  :P
Title: Re: Growth Rings, I'll just leave this here.
Post by: brad918 on January 09, 2018, 02:01:52 PM
Quote from: Darrel on January 09, 2018, 01:49:24 PM
Quote from: brad918 on January 09, 2018, 12:50:45 PM
Impressive growth! Here is the opposite end of the spectrum.

(https://forestryforum.com/gallery/albums/userpics/43923/IMG_3893~0.JPG)

On the opposite end of the spectrum, I have 6" DABH Pondarosa pine on my property that are over 100 years old.

And FWIW, someone split the pith.  :P

What is ment when you say "someone split the pith"?
Title: Re: Growth Rings, I'll just leave this here.
Post by: Darrel on January 09, 2018, 04:50:52 PM
Brad, if you look at the picture of the piece of wood you posted, you will notice that the left side of the piece splits the very center of the tree which is called the pith.  The wood near the pith is young or juvenile and shrinks longitudinally or lengthwise when it dries causing the board to warp, twist and otherwise misbehave. 

I made a pair of 16' sled runners that I Had no use for by splitting the pith.

 (https://forestryforum.com/gallery/albums/userpics/35121/image~21.jpeg?easyrotate_cache=1505358293)
Title: Re: Growth Rings, I'll just leave this here.
Post by: tmbrcruiser on January 10, 2018, 09:21:42 AM
My home was built in 2000 and during the build I was shown radiata pine doors. To my surprise the wood is very dense and heavy, even though the growth rings were similar to your picture. Is that normal for all radiata pine?
Title: Re: Growth Rings, I'll just leave this here.
Post by: Ianab on January 10, 2018, 01:40:38 PM
Quote from: tmbrcruiser on January 10, 2018, 09:21:42 AM
My home was built in 2000 and during the build I was shown radiata pine doors. To my surprise the wood is very dense and heavy, even though the growth rings were similar to your picture. Is that normal for all radiata pine?

It's pretty normal for NZ grown radiata at least. The growth rate will vary according to the soil and climate of the growing site, so it's not all quite that fast. But normal harvest would be 25-30 years, for trees 2-3ft dbh. The trees have also been selectively bred for years for better form and more stable wood, so they are quite different to the original wild grown trees.
Title: Re: Growth Rings, I'll just leave this here.
Post by: Magicman on January 10, 2018, 02:37:13 PM
That is why I dread having to saw 18 year old Plantation SYP.  The growth rings will be up to ½" and I have to flip the cant after every pass.  Just dreadful stuff.   :-\