8
votes
Accepted
How do I correct extreme crossgrain cupping?
You can get this flatter certainly, but you may not be able to get them totally flat or to get them to stay that way permanently — wood that has bowed can show a tendency to want to return to that ...
- 63.5k
7
votes
Accepted
How can I fix warping on board made of glued 2x4s
This is not really an answer but a large comment that could point out several pitfalls that could have brought you to this point. I am not sure of the best advice for your situation as the warping ...
- 20.1k
7
votes
Accepted
Is this a case of just using the wrong wood? (Warping)
The strips you secured to the bottom are the cause of the warping. The main boards can't expand and contract because they are fixed to the strips at a few points. If the boards were just glued to ...
- 4,798
6
votes
Does MDF warp less than pineboards?
MDF is practically purpose-made for this application. It is very dimensionally stable, one of its prime selling points. And while it's not as stiff or strong as ply it is as a rule more stable these ...
- 63.5k
6
votes
How can I fix warping on board made of glued 2x4s
I know cheap construction 2x4s can warp
There are multiple possible causes for distortion in a glued-up panel like this. Often more than one of them are to blame, although there may be one major ...
- 63.5k
6
votes
Accepted
Having a hard time ripping inexpensive 2x10 lumber. Could use a little advice
Wax your riving knife well with paste wax, see if it makes a big enough difference. If you don't have any paste wax just scribble thoroughly with the butt of a candle, same as is done on hand saws to ...
- 63.5k
5
votes
Accepted
How can I design a large speaker cabinet to come together square and true when my panels aren't flat and my boards aren't straight?
In my view this is a question of "Do I control my materials or do they control me". Your concern that your warped pieces may not meet well is valid. Every project should begin with a plan for what you ...
- 8,129
5
votes
Accepted
"Annealing" wood?
Your best 'chance' is using moisture. Basically getting the wood 'wet' and straightening it, then letting it dry straight. Some woods and small bends might work with wetting/moistening the board. ...
- 15.6k
5
votes
Warped Walnut Slabs
We have to be careful in advising you here since what you mean by "warp" may not match the commonly accepted definition. Some people use the term generically to refer to boards that aren't flat along ...
- 63.5k
5
votes
How do you straighten/bend wood planks without removing any material?
I have tried to straighten a wood screen door with steam with very little improvement. I then forceably bent it well past straight, 1 1/2 inches in center of the 7 foot span. Then saturated it with ...
- 51
5
votes
Accepted
Wood warps after milling
It's not always possible to avoid it, but there are techniques to minimize this problem.
Good quality lumber that has been well dried is the best start!
Buy wood closest to needed thickness so you ...
- 2,109
4
votes
What is a good way to prevent jointed tabletops from bowing when tightening fasteners or the glue sets?
No one has mentioned your jointer technique. If the jointer fence is not perfectly 90° then any small deviation get multiplied by the number of boards you have and you get a curve. The solution to ...
4
votes
Does MDF warp less than pineboards?
MDF is much more likely to be flat and is relatively dimensionally stable - however it's not overly strong when running long unsupported distances.
If the pelmet is attached at its top along the ...
- 1,045
4
votes
How do I correct extreme crossgrain cupping?
Adding to Graphus's answer, you can also cut the board down the middle run them through a jointer and reglue them back together. If you can flip one side over for the join, you will reduce the max bow ...
- 15.6k
4
votes
Best way to cut a thin board that resists warping
Are you familiar with how the wood fibers are aligned in a tree? They (mostly) run from top to bottom and are bonded together with lignin. If you used the 'B' method the wood fibers would be running ...
- 526
4
votes
Accepted
Should I seal my bed slats, and if yes, with what?
He thinks that the bed slats might warp if I don't use a sealer.
A 'sealer' won't make much or any difference to this once the slats are fixed in place and in use.
I use quotes above because the ...
- 63.5k
4
votes
How long should I leave a green yew stick clamped to a bench for straightening?
How long should I leave a green yew stick clamped to a bench for straightening?
Don't. That's not how to dry wood.
Makers of walking sticks and hiking poles, who harvest saplings and branches from ...
- 63.5k
3
votes
Flatten warped plywood
Unless this board holds special value to you, any big box store will have a 4x8' sheet of 1/8" hardboard for $5-$10. If they're not too busy they'll cut it while you wait.
That said, if I was ...
- 141
3
votes
Accepted
Any way to straighten this wood gate piece?
At this point it's done, for all practical purposes. If it were really important to straighten this thing out, and you were going to paint it, you could plow a dado, insert a Guitar Truss Rod , and ...
- 534
3
votes
Is this a case of just using the wrong wood? (Warping)
The panel is curving because the support strips running perpendicular to the panel boards are flexible. The panel boards have dried and shrunk while the support strips remained unchanged in length. If ...
- 3,667
3
votes
Warped Walnut Slabs
Essentially: No. You make slabs flat by removing wood to obtain a flat surface, by planing or by using a carriage-guided router or by machine-sanding or some combination of these. Sometimes you can ...
- 9,171
3
votes
Repair warped wood in situ
You are not dealing with warped wood here.
Your last picture shows that you have a moisture problem (due to a change in the ambient moisture content of the air - change from a dry climate to a wet ...
- 3,667
3
votes
Warped Monkeypod Desktop
It's hard for me to tell by the picture, but it looks to me like it's not so much warped wood as the splined joint between the component planks isn't true.
If that's the case, you might rip that ...
- 1,446
3
votes
Accepted
Will forcing a twisted drawer front flat cause issues?
Will forcing a twisted drawer front flat cause issues?
Maybe.
This is a try-it-and-see thing. You have to check whether your drawer front has enough strength
1 to distort your plywood drawer. With ...
- 63.5k
2
votes
Accepted
How do I fix a warped shoji door?
I would guess that there are two possible sources for the problem.
First, your long board may be warping. This will be the result of grain direction or stress due to humidity/moisture changes. ...
- 8,129
2
votes
Should I seal my bed slats, and if yes, with what?
I'm trying to picture a situation where you would see the slats in an assembled bed. Is this a bunk bed?
I've made several beds and have never sealed the slats. If there's concern such as incomplete ...
- 1,072
2
votes
Accepted
How to prevent desktop from bowing?
The asked question:
The Sagulator is the generally accepted reference for determining if shelves are going to be strong enough to support the expected load over the desired span. Your table is ...
- 6,236
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