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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 ...
Steven's user avatar
  • 4,788
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 ...
Graphus's user avatar
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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 ...
Graphus's user avatar
  • 66.3k
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 ...
Leo Becker's user avatar
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 ...
Ashlar's user avatar
  • 8,464
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 ...
Graphus's user avatar
  • 66.3k
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 ...
Volfram K's user avatar
  • 2,119
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 ...
Dave Smylie's user avatar
  • 1,055
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 ...
Graphus's user avatar
  • 66.3k
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 ...
Robert Edwards's user avatar
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 ...
Jambo's user avatar
  • 526
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 ...
Graphus's user avatar
  • 66.3k
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 ...
Rob Elliott's user avatar
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 ...
Benchwerks's user avatar
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 ...
Ast Pace's user avatar
  • 3,667
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 ...
Ast Pace's user avatar
  • 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 ...
keshlam's user avatar
  • 9,201
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 ...
gnicko's user avatar
  • 1,496
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 ...
Graphus's user avatar
  • 66.3k
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. ...
Ashlar's user avatar
  • 8,464
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 ...
bpedit's user avatar
  • 1,072
2 votes
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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 ...
FreeMan's user avatar
  • 6,754
2 votes
Accepted

Which side of a cupped table top has absorbed more humidity (and other causes for warping)?

What causes this cupping? This is a little more complex than just about moisture loss and gain, it's to do with long-term changes in wood as these effects take place. What in essence makes a tabletop ...
Graphus's user avatar
  • 66.3k
2 votes
Accepted

Routed Brazillian cherry warps after cutting

Rather than keep trying I plan to re-cut the piece. I'm glad that's an option for you as it's generally the best course of action in such a situation. Although sometimes one can remove warp ...
Graphus's user avatar
  • 66.3k
2 votes

What to do about cupped table top

Any advice would be greatly appreciated. 3/16” over the length and width of the table isn’t much; if you put the top on the base and leave it unattached, it might flatten out on its own after a week ...
Caleb's user avatar
  • 9,588
2 votes

Having a hard time ripping inexpensive 2x10 lumber. Could use a little advice

Does your table saw have a riving knife? Something like this? From Amazon.com These are supposed to help keep a board from pinching the blade when they are cut.
bowlturner's user avatar
  • 16.1k
2 votes

Having a hard time ripping inexpensive 2x10 lumber. Could use a little advice

Sounds unusual. I have no experience with SYP, but I find it to be a pretty easy go ripping 2x green lumber when compared to hardwood with a lot of internal tension. Have you tried doing a 1/2 depth ...
John Carter's user avatar

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