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| Warped wood http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=46164 |
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| Author: | rsfjr [ Wed Aug 12, 2015 5:37 pm ] |
| Post subject: | Warped wood |
Hello all, I have a nice board which is warped/cuped. It is about 1/16 inch thick. Do you have any tips on how should I deal with the warping? I don't want to throw away the piece, which is large enough to build a guitar bottom. All the best, Ronaldo |
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| Author: | meddlingfool [ Wed Aug 12, 2015 6:05 pm ] |
| Post subject: | Re: Warped wood |
Show us some pics? |
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| Author: | rsfjr [ Wed Aug 12, 2015 6:17 pm ] |
| Post subject: | Re: Warped wood |
Thanks for the reply. As soon as I get home I am going to post some Sent from my GT-I9505 using Tapatalk |
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| Author: | rsfjr [ Wed Aug 12, 2015 6:26 pm ] |
| Post subject: | Re: Warped wood |
Got the thickness wrong. It is about 0.4 inch Sent from my GT-I9505 using Tapatalk |
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| Author: | meddlingfool [ Wed Aug 12, 2015 7:14 pm ] |
| Post subject: | Re: Warped wood |
Like that?
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| Author: | rsfjr [ Wed Aug 12, 2015 7:50 pm ] |
| Post subject: | Re: Warped wood |
Yeah Sent from my GT-I9505 using Tapatalk |
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| Author: | Mike OMelia [ Wed Aug 12, 2015 8:01 pm ] |
| Post subject: | Re: Warped wood |
Seriously? Here's what you do |
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| Author: | rsfjr [ Wed Aug 12, 2015 8:33 pm ] |
| Post subject: | Re: Warped wood |
What if it remains warped after thicknessing down? Sent from my GT-I9505 using Tapatalk |
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| Author: | meddlingfool [ Wed Aug 12, 2015 9:06 pm ] |
| Post subject: | Re: Warped wood |
Generally, once it's at the correct thickness, the braces and attaching it to the rims will keep the shape. |
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| Author: | Mike OMelia [ Wed Aug 12, 2015 11:16 pm ] |
| Post subject: | Re: Warped wood |
I'm holding out for pictures of the wood. This could be a lost cause. |
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| Author: | meddlingfool [ Wed Aug 12, 2015 11:17 pm ] |
| Post subject: | Re: Warped wood |
Or, it could not be a lost cause. Let's see some pics and then have a second thought... |
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| Author: | rsfjr [ Thu Aug 13, 2015 8:25 am ] |
| Post subject: | Re: Warped wood |
Sorry for the delay.     It is a tropical hardwood. Sent from my GT-I9505 using Tapatalk |
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| Author: | rsfjr [ Thu Aug 13, 2015 8:26 am ] |
| Post subject: | Re: Warped wood |
Missed this one.  Sent from my GT-I9505 using Tapatalk |
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| Author: | kencierp [ Thu Aug 13, 2015 8:33 am ] |
| Post subject: | Re: Warped wood |
I've sprayed a mist of water on the cupped side -- that tends to make the board flatten for a while, long enough to resaw. However that board is total slab cut and its going to warp even more when thinned --- personally not something I'd use for guitar. |
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| Author: | rsfjr [ Thu Aug 13, 2015 8:40 am ] |
| Post subject: | Re: Warped wood |
Cuped side = belly side? Sent from my GT-I9505 using Tapatalk |
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| Author: | kencierp [ Thu Aug 13, 2015 8:47 am ] |
| Post subject: | Re: Warped wood |
cup side --- crown side The cupped side has shrunk because it has less moisture content than the crown side |
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| Author: | meddlingfool [ Thu Aug 13, 2015 10:34 am ] |
| Post subject: | Re: Warped wood |
Definitely more flatsawn than I'd like to see, but, people do get away with using wood like that. Again, once it's thinned, braced, and glued to the box, it might be ok. |
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| Author: | rsfjr [ Thu Aug 13, 2015 10:48 am ] |
| Post subject: | Re: Warped wood |
Thanks. Gonna thin it. Glue both parts to get the width and see what happens. It is hard to find quarter sawn wood around here, but since it is for my first instrument I can afford to make lots of mistakes. Lol Sent from my GT-I9505 using Tapatalk |
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| Author: | Bryan Bear [ Thu Aug 13, 2015 11:07 am ] |
| Post subject: | Re: Warped wood |
Since this is your first, and the wood is at hand, I see no reason to not press on and thickness this wood and reevaluate. At the very worst, you will get practice. How do you plan to thickness this wood? I used a flatsawn and cupped (though not that mmuch) walnut board for a back once and had no problem. I used a thickness sander and by the time I started getting into the range of final thickness the drum had no problem holding the back flat to the table while it sanded it. I flipped it over for every pass. Once I was at the final thickness the plate was still a bit cupped, one side cupping one way and the other book-matched half cupping the other way. Once the radiused braces were glued on and the back glued on to the arch of the rim it was fine. |
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| Author: | rsfjr [ Thu Aug 13, 2015 11:10 am ] |
| Post subject: | Re: Warped wood |
Going to plane it down with a scraper plane or a toothed plane. Sent from my GT-I9505 using Tapatalk |
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| Author: | Bryan Bear [ Thu Aug 13, 2015 11:15 am ] |
| Post subject: | Re: Warped wood |
That will be more challenging with the sides that thick and the cups going opposite directions. But like I said, the worst that will happen is that you will get practice. . . |
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| Author: | rsfjr [ Thu Aug 13, 2015 11:33 am ] |
| Post subject: | Re: Warped wood |
A thickness sander would be nice. Did you build one? Sent from my GT-I9505 using Tapatalk |
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| Author: | rsfjr [ Thu Aug 13, 2015 11:41 am ] |
| Post subject: | Re: Warped wood |
In theory, I would have to thickness down to 0.2" to get it flat, which is my desired thickness. Sent from my GT-I9505 using Tapatalk |
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| Author: | meddlingfool [ Thu Aug 13, 2015 11:56 am ] |
| Post subject: | Re: Warped wood |
.200 is very thick for a back, unless you mean that .200 is the thickness you want to join it at., with intent of thinning further... |
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| Author: | rsfjr [ Thu Aug 13, 2015 12:11 pm ] |
| Post subject: | Re: Warped wood |
Yes. I think it is going to be a bit difficult to glue something thinner that that. The final thickness I am aiming for is about 1/8''. Sent from my GT-I9505 using Tapatalk |
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