How much shrinkage in green wood? - Router Forums
 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 04-22-2012, 08:58 AM Thread Starter
Registered User
 
Jack Wilson's Avatar
 
Join Date: Mar 2010
Country: United States
First Name: Jack
Posts: 918
 
Question How much shrinkage in green wood?

I have had some tree trunks bandsawn up for me. They were down for about 3 years, the lumber looks great, and I would like to use some of it for hidden parts, like drawer slides, or inner parts of a carcase where it won't be seen so much. What will I encounter if I use it now, rather than later? It's all soft maple, I think, (it may be hard maple but as I said I believe it's soft maple). The slabs vary in thickness between 1-1/8" to 2". Some is still left to mill and I may have it ripped to 3", I would like to use that for a bench top someday.

Thanks!

Jack


He is no fool who gives what he cannot keep to gain what he cannot lose

If you cannot stand behind our troops, (and I understand, no judgement here), then please stand in front of them, remember, they're willing to stand in front of you!
Jack Wilson is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 04-22-2012, 09:45 AM
Retired Moderator
 
Mike's Avatar
 
Join Date: Nov 2004
Country: United States
First Name: Mike
Posts: 11,921
 
Send a message via Skype™ to Mike
Default

Jack, the only reliable method to check the wood is a moisture meter. Since the wood was down for 3 years it should of lost a great deal of it's moisture content but sawing it into slabs exposed hidden surfaces and only a meter will give you an idea of how it will react. You sure don't want to build a project and look at it the next day to see it has self destructed.

Mike
"Living in the D" (this means Detroit!)
"It's fine to disagree with other members as long as you respect their opinions"
Mike is offline  
post #3 of 7 (permalink) Old 04-22-2012, 12:00 PM
Registered User
 
DaninVan's Avatar
 
Join Date: Dec 2011
Country: Canada
First Name: Dan
Posts: 14,555
 
Default

What Mike said! They were "down", but were they under cover?
Moisture meters are so inexpensive now that they should be in every woodworker's shop.
I'm not recommending this, just illustrating the cost part...
Maxwood Digital Moisture Meter [MW-5101] - $49.99 : KMS Tools & Equipment from Vancouver BC, Selling quality tools at affordable prices all over Canada. Largest powertool, handtool and woodworking machinery retailer in Canada.

Is the lumber indoors now? Be careful; if there's a sudden change in conditions you might find the wood takes on a mind of its own. You no doubt have already done so, but the wood should be stacked flat with thin 'stickering' between each piece.
The hardwood floor guys like to bring their material into the rooms they're going to be installing in a few days ahead of starting in order to allow the room's humidity, and moisture content of the wood to stabilize...it's that sensitive.
DaninVan is online now  
Sponsored Links
Advertisement
 
post #4 of 7 (permalink) Old 04-22-2012, 03:30 PM Thread Starter
Registered User
 
Jack Wilson's Avatar
 
Join Date: Mar 2010
Country: United States
First Name: Jack
Posts: 918
 
Red face

The machined stock is stickered under cover and in the dry, but the logs were felled and just laying in the field for 3 years. I know its not dry, I expect to wait years for that, but I wondered how a few pieces here and there would react in use. No, I don't want to take any chances, that is why I am asking, and I HAD hoped for a more positive response!

Jack


He is no fool who gives what he cannot keep to gain what he cannot lose

If you cannot stand behind our troops, (and I understand, no judgement here), then please stand in front of them, remember, they're willing to stand in front of you!
Jack Wilson is offline  
post #5 of 7 (permalink) Old 04-22-2012, 04:06 PM
Registered User
 
Join Date: Apr 2012
Country: United States
First Name: Mark
Posts: 7
 
Default

Cut about a foot of the end of 1 of the boards and mill it to what you want to use it for say 3/4x3" and take it in your shop. If you have a postage or similar scale weigh it once a week until it stops loosing weight. At that point it will be dry to your areas relative humidity and you can see how much movement to expect and drying time.
Warden is offline  
post #6 of 7 (permalink) Old 04-22-2012, 04:23 PM
Moderation Team
 
Cherryville Chuck's Avatar
 
Join Date: Sep 2010
Country: Canada
First Name: Charles
Posts: 15,680
 
Default

Jack,
If the logs were laying on the ground for 3 years they may not be much drier than when the tree was green, particularly the sides that were down. As Dan said, pile them with each layer stickered every 2' of board length and make sure there is good ventilation thru the stack. I've also been told that you should restack every 2 months and put the top boards on the bottom. If the pile is not very tall it wouldn't hurt to add weight.

The moisture meter is good but it won't tell you when it can't dry any more which varies according to your local climate. As Mark suggested, it is stable when it stops changing.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
Cherryville Chuck is online now  
post #7 of 7 (permalink) Old 04-22-2012, 05:38 PM
Retired Moderator
 
BigJimAK's Avatar
 
Join Date: Mar 2009
Country: United States
First Name: Jim
Posts: 3,503
     
Default

If you want more than you care to know about wood and wood products, the US Forest Service publishes "Wood Handbook: Wood as an Engineering Material" at http://www.fpl.fs.fed.us/documnts/fplgtr/fpl_gtr190.pdf

Jim

Check out that new high-tech cordless router.. wireless and no recharging required!!
BigJimAK is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Router Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
I need help to choose type of wood dane5547 Wood Species 4 07-25-2009 07:04 PM
Green wood ElWoodTroll New Member Introductions 5 11-21-2008 02:59 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome