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Author Topic: Cupped cherry slabs from solar kiln  (Read 2909 times)

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Offline ellmoe

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Re: Cupped cherry slabs from solar kiln
« Reply #20 on: January 08, 2018, 07:44:25 AM »
Wouldn't know sweet gum or sap gum if I cut one down. Our cotton wood is quaking aspen and it does go nuts. Is red gum what we call Pepperidge with spiral grain?

   Sap gum and red gum are the sap wood and heart wood of a sweet gum  , respectively. Red gum is very attractive while the sap gum is just off white and not very interesting. The sap gum is very attractive when spalted, however.
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Offline WDH

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Re: Cupped cherry slabs from solar kiln
« Reply #21 on: January 08, 2018, 07:46:55 AM »
It takes an old sweetgum log to develop that beautiful heartwood.  Growth stress like competition or poor site slows growth and can trigger heartwood formation.  I plan to harvest a big ole sweetgum and quartersaw it in a few weeks.
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Online moodnacreek

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Re: Cupped cherry slabs from solar kiln
« Reply #22 on: January 08, 2018, 08:32:21 AM »
Ellmoe, that sounds like 'red birch' up north that is actually the red heart wood of white birch.         Thanks

Offline pineywoods

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Re: Cupped cherry slabs from solar kiln
« Reply #23 on: January 08, 2018, 10:14:29 AM »
It takes an old sweetgum log to develop that beautiful heartwood.  Growth stress like competition or poor site slows growth and can trigger heartwood formation.  I plan to harvest a big ole sweetgum and quartersaw it in a few weeks.
Reverse roll QS sweetgum ? sounds interesting.. Pics please..
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Offline YellowHammer

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Re: Cupped cherry slabs from solar kiln
« Reply #24 on: January 08, 2018, 10:49:05 AM »
It takes an old sweetgum log to develop that beautiful heartwood.  Growth stress like competition or poor site slows growth and can trigger heartwood formation.  I plan to harvest a big ole sweetgum and quartersaw it in a few weeks.
Reverse roll QS sweetgum ? sounds interesting.. Pics please..
I'm interested to see how it looks, also.  Historically, I would forward roll sweetgum into the nearest burn pile :D :D
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Online Darrel

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Re: Cupped cherry slabs from solar kiln
« Reply #25 on: January 08, 2018, 02:12:39 PM »
Speaking of cottonwood, 3rd or 4th log/tree I sawed on my mill was a big old cottonwood that I had to trim the butt log with a chainsaw to make it fit the mill.  Slabbed it at 6/4, put it on sticks and let it air dry.  Cupped something aweful.  I thought about putting in back on the mill to flatten it but there wouldn't be anything left. So it's been sitting there.  About a year ago I took the cover off to use it to cover some good wood and I noticed the other day that it is starting to flatten out. Don't know why it's flattening but I think one of these days soon, I'll have to check it out. With no cover, it may be rotten, had a very wet spring.
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Offline ellmoe

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Re: Cupped cherry slabs from solar kiln
« Reply #26 on: January 08, 2018, 02:59:26 PM »
It takes an old sweetgum log to develop that beautiful heartwood.  Growth stress like competition or poor site slows growth and can trigger heartwood formation.  I plan to harvest a big ole sweetgum and quartersaw it in a few weeks.
[/quo, te]

I seen 12 - 14" dbh sweet gum that was heart, "wall to wall", and 30" with no heart at all. Not knowing where or under what conditions they came from, I assumed it to be growth and stress related.
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Offline GeneWengert-WoodDoc

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Re: Cupped cherry slabs from solar kiln
« Reply #27 on: January 08, 2018, 08:48:01 PM »
Appreciate that sapwood in cottonwood dries really fast. The heartwood which often has bacterial infection will be around 140% MC and will dry very slowly with bacteria, taking months and months. This is worse with thicker. So the sapwood will shrink and cup. But then as the heartwood dries later and shrinks, the cup will decrease. Unfortunately, it is not likely to flatten perfectly.
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Offline PA_Walnut

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Re: Cupped cherry slabs from solar kiln
« Reply #28 on: May 23, 2018, 07:45:40 AM »
Put all the weight you can on it, even hen solar kiln or air drying.  It won't stop all cup, but it certainly helps.  Didn't you make some concrete slab weights? 


Yellow, I need to get some more weights and saw this about "concrete slab weights". Seen any posts or details here on ones that are practical and reasonable to make?
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Offline YellowHammer

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Re: Cupped cherry slabs from solar kiln
« Reply #29 on: May 23, 2018, 10:41:35 PM »
Not really using much concrete for weight anymore, I've switched over to using marble and granite slabs for weights.

I was using a concrete septic tank lid.
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Offline K-Guy

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Re: Cupped cherry slabs from solar kiln
« Reply #30 on: May 24, 2018, 08:43:07 AM »
Yellowhammer

That's a crappy weight to use!! :D

Offline WDH

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Re: Cupped cherry slabs from solar kiln
« Reply #31 on: May 24, 2018, 07:59:41 PM »
 :D :D :D
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Offline YellowHammer

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Re: Cupped cherry slabs from solar kiln
« Reply #32 on: May 24, 2018, 08:04:13 PM »
For some reason all my wood had a peculiar odor.....
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Offline PA_Walnut

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Re: Cupped cherry slabs from solar kiln
« Reply #33 on: May 25, 2018, 05:39:05 AM »
Not really using much concrete for weight anymore, I've switched over to using marble and granite slabs for weights.


Interestesting. Did you make a "bin" or pallet with them attached? I have been considering building a pallet with cement blocks strapped down to it. Another item on the ever-growing task list.

I thought it was just all about sawing logs. :D
I own my own small piece of the world on an 8 acre plot on the side of a mountain with walnut, hickory, ash and spruce.
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Offline WDH

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Re: Cupped cherry slabs from solar kiln
« Reply #34 on: May 25, 2018, 07:21:01 AM »
I use a pallet with a layer of cement blocks as a weight. 
Woodmizer LT40HDD35, John Deere 2155, Kubota M5640SU, Nyle L53 Dehumidification Kiln, and a passion for all things with leafs, twigs, and bark.  hamsleyhardwood.com

Offline YellowHammer

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Re: Cupped cherry slabs from solar kiln
« Reply #35 on: May 25, 2018, 11:17:10 PM »
Just an 8 foot long oak pallet, top and bottom decking screwed on, and stacks of flat rocks.  I believe about 3,500 lbs.  
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Offline PA_Walnut

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Re: Cupped cherry slabs from solar kiln
« Reply #36 on: May 26, 2018, 06:28:58 AM »
I use a pallet with a layer of cement blocks as a weight. 


I was thinking of doing the same. Yellow's granite is pretty cool. Thanks.
I own my own small piece of the world on an 8 acre plot on the side of a mountain with walnut, hickory, ash and spruce.
LT40HD Wide 35HP Diesel
Baker Portable Edger with Kubota Diesel
Kubota M62 Tractor/Backhoe
WoodMizer KD250 Kiln


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