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WOOD MOVEMENT A SUBJECT NOT UNDERSTOOD BY MANY.

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Forum topic by a1Jim posted 12-16-2014 04:49 PM 1602 views 12 times favorited 31 replies Add to Favorites Watch
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a1Jim

115202 posts in 3038 days


12-16-2014 04:49 PM

Topic tags/keywords: resource

Hi friends
As I troll through LJS I see many questions about how to do certain operations or projects that wood movement is misunderstood or ignored totally. A large number of woodworking designs and plans by online designers who know nothing of woodworking and have folks connect table tops with pocket screws or just glue them to their aprons,( a definite no no as far as wood movement is concerned). I recently came across an article by Chris Becksvoort a very well known shaker furniture maker who has done an outstanding job of explaining the many aspects of wood movement. I thought I would share it with those of you who have not seen this article before. I would suggest book marking this for when your building projects and want information on how to avoid wood movement problems.
Enjoy!

http://toddpartridgedesign.com/sr_pages/documents/UnderstandingWoodMovement.pdf

-- http://artisticwoodstudio.com Custom furniture


31 replies so far

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docspencer

292 posts in 1407 days


#1 posted 12-16-2014 04:55 PM

Thanks Jim. I’ve built my share of furniture where this is an issue. I’ve always just tried to figure this out on my own. Look forward to reading this.

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rhybeka

2669 posts in 2582 days


#2 posted 12-16-2014 05:09 PM

Thanks Jim!

is there anything around about how this applies to using a mix of plywood and hard/soft woods?

-- Beka/Becky - aspiring jill of all trades, still learning to not read the directions.

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a1Jim

115202 posts in 3038 days


#3 posted 12-16-2014 05:10 PM

I hope you find it informative Doc,it’s probably the best articles I’ve seen on the subject.

-- http://artisticwoodstudio.com Custom furniture

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Rob

704 posts in 2532 days


#4 posted 12-16-2014 05:16 PM

Thanks Jim! I understand the basics of wood movement but it’s nice to have a reference that shows so many common examples and good solutions, all in one place.

-- Ask an expert or be the expert - http://woodworking.stackexchange.com

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waho6o9

7171 posts in 2038 days


#5 posted 12-16-2014 05:19 PM

A lot of great information in the link Jim, thanks for

sharing!

Printed and bookmarked.

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Curtis Z

30 posts in 1369 days


#6 posted 12-16-2014 05:24 PM

Thanks a lot.. This is definitely an area in which I want to learn more.. An admitted weak area of mine for sure, as a new hobbyist

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a1Jim

115202 posts in 3038 days


#7 posted 12-16-2014 05:29 PM

Beka
I guess I was typing when you posted. I don’t think Chris uses much plywood all his work is made true to shaker tradition,but I think reading his article can still help.
What you have to remember with plywood and other sheet goods is that it doesn’t move but solid wood does,so if your connecting the two together in some way you have to allow for the solid wood to move. There are some exceptions such as smaller pieces that are 2” or less across the grain of solid wood does not move much .Quarter sawn wood moves far less than plain sawn wood,so you may be able to use even wider than 2” solid wood if it’s quarter sawn wood.
If you have more questions feel free to PM me.

-- http://artisticwoodstudio.com Custom furniture

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a1Jim

115202 posts in 3038 days


#8 posted 12-16-2014 05:35 PM

Glad to share guys

-- http://artisticwoodstudio.com Custom furniture

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paxorion

1101 posts in 1507 days


#9 posted 12-16-2014 05:47 PM

Jim – Thanks for sharing. I completely agree that wood movement (and drying/moisture content) is all too often ignored. All too often we see prioritization of form (good or not) that the long term results of using a natural product takes it’s toll.

Now, I’m far from being adept on the subject, but thankfully none of my projects have imploded/exploded on me from wood movement. Maybe I’ve had a good run at heeding the warnings, or I just got lucky.

-- paxorion

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DocSavage45

7698 posts in 2303 days


#10 posted 12-16-2014 06:06 PM

Jim,

As I was reading the PDF I thought “This is clear, lots of good pictures and something that is a basic tenant of woodworking, except for plywood.” LOL! You answered that one. :<)

Thanks!

Can you find something that clear on mixing woods in construction? Due to cellular structures, and moisture?

-- Cau Haus Designs, Thomas J. Tieffenbacher

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a1Jim

115202 posts in 3038 days


#11 posted 12-16-2014 06:15 PM

Thanks Paxorion and Tom

Maybe this one might help Tom

http://www.woodworkerssource.com/wood_movement.php

-- http://artisticwoodstudio.com Custom furniture

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Jerry

1766 posts in 1109 days


#12 posted 12-16-2014 06:38 PM

Thanks Jim, you were the first one to tell me about this when I first joined LJ, and I’ve studied hard to understand as much as I can. Now I pretty much know what to expect in terms of movement, which way it will go, and how much, but planning for this movement in a project, well that is still beyond my skill level, so this PDF file is greatly appreciated. I’ve not read it yet, but it’s on my list for today.

-- There are good ships and there are wood ships, the ships that sail the sea, but the best ships are friendships and may they always be. http://geraldlhunsucker.com/

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DocSavage45

7698 posts in 2303 days


#13 posted 12-16-2014 07:11 PM

Jim,

Not to shabby! LOL! Read it and it is informative. I have been reading ( not again?!) a book on American Furniture by John T. Kirk. It has a chapter on aging and wood techniques in America from our beginnings of copying our French and English furniture heritage. He has an example of a chair that uses hard and soft woods ( stained!) and in areas not seen soft woods might be used.

I started thinking and have seen the use of diffeent hardwoods on LJ’s and other places.

My hero (one of them) James Krenov pushed the limits to experiment with shapes and forms ( original studio furniture) and a master craftsman friend from Japan told me he went to see a piece by Krenov. It was cracking.

The article is good, and concise. Wondering if you have run across another more extensive but clearly written article about soft and hardwoods and their relative expansion and contractions?

Thanks!

-- Cau Haus Designs, Thomas J. Tieffenbacher

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DocSavage45

7698 posts in 2303 days


#14 posted 12-16-2014 07:15 PM

Oh yeah,

Moisture and plywood? Have some older 5 ply that has done some great moisture dances! LOL!

-- Cau Haus Designs, Thomas J. Tieffenbacher

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a1Jim

115202 posts in 3038 days


#15 posted 12-16-2014 07:24 PM

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