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Caving Back Arch http://www-.luthiersforum.com/forum/viewtopic.php?f=10102&t=10631 |
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Author: | novab350 [ Tue Jan 30, 2007 8:27 am ] |
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Hello all, I'm new around here and I am having a bit of a problem, so I was hoping someone out there could help. I recently finished an OM style acoustic. It has been finished for about three weeks. It has moved locations and I am noticing the arch in the back has begun to flatten out and even cave into the soundbox. I was thinking that maybe the humidity at its new home is too high? I would greatly appreciate any advice on the cause of this and potential solutions. THANKS, Nate |
Author: | TonyKarol [ Tue Jan 30, 2007 9:34 am ] |
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i would say its way too low .... more humidity causes things to swell up. What was the RH when you braced it ??? How about when you put the back/top on ?? What is it now - if you know these things, your problem most likely wil be solved. My guess is that you braced it at a much higher RH than it is currently living in. IMO if you build over 50% (I like 40-42 personally), you are pretty much asking for troubles like you have if you live in north america. I know that lots of hobby builders cant make it happen, but I prefer to shape the braces and then glue the top or back on right away the same day. |
Author: | Dave Rector [ Tue Jan 30, 2007 10:55 am ] |
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I agree with Tony, I think it's in a low humidity environment. If it's living in a house in a colder climate then there is a good possibility forced air heat is being used. This dries the air out and drops the humidity very low in some cases. Try putting a humidifier in the case for a while and see if that doesn't help. If you don't have a humidifier use one of those soap dish things for travelers with a damp sponge inside it. |
Author: | A Peebels [ Tue Jan 30, 2007 11:38 am ] |
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Yup. The same thing happened to me one time when I braced with the RH too high. I always learn faster from my own mistakes. Mine not only flattened when it got dry, but it also cracked. (Ziricote) Al |
Author: | Dave Rector [ Tue Jan 30, 2007 11:42 am ] |
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[QUOTE=A Peebels]Mine not only flattened when it got dry, but it also cracked. (Ziricote)[/QUOTE] Ouch! ![]() |
Author: | novab350 [ Tue Jan 30, 2007 2:24 pm ] |
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Thanks everyone. I will get a humidifier in it. I just wanted to nail the problem down before went and made it worse. |
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