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 Post subject: Top split
PostPosted: Sat May 19, 2018 8:32 pm 
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Cocobolo
Cocobolo

Joined: Fri Feb 24, 2017 8:43 am
Posts: 346
Yea.
So I routed the area where the rosette would go. Took the top out to get the sea dust out of the groove..
Tapped on the other side to kind of knock the stuff out and I hear “crack”! I dodnt got it hard or flex it... just a tap w I he side of my thumb like you’d do tuning the top.
The crack went from the top all the way to t middle lower bout! Now....
it didn’t go all the way through. I can flex it and see the crack on the back, but the top side seems like the crack didn’t make it through.
At this stage is it worth carrying on with this top? Or scrapping it?
I know thinned hide glue would be the fix her, but I don’t do (just haven’t gotten into it) hide glue yet.
Pull some tape clamps and thin ca?
Or just consider it a bad top?


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 Post subject: Re: Top split
PostPosted: Sat May 19, 2018 8:56 pm 
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Joined: Fri Jan 22, 2010 9:59 pm
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First name: Dennis
Last Name: Kincheloe
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State: MO
Country: USA
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Status: Amateur
Failed center seam, or crack in the wood? Is it spruce, cedar, redwood, or something else?

Most likely that crack was already there, and just got longer.

I usually glue cracks (with thin hide glue) and continue on. But do make sure the rest of the wood is in good condition by flexing across the grain with a reasonable amount of pressure.


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 Post subject: Re: Top split
PostPosted: Sat May 19, 2018 9:02 pm 
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Cocobolo
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DennisK wrote:
Failed center seam, or crack in the wood? Is it spruce, cedar, redwood, or something else?

Most likely that crack was already there, and just got longer.

I usually glue cracks (with thin hide glue) and continue on. But do make sure the rest of the wood is in good condition by flexing across the grain with a reasonable amount of pressure.

Not the center seam.
It’s Spruce


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 Post subject: Re: Top split
PostPosted: Sat May 19, 2018 9:22 pm 
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Cocobolo
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Gah .
Was able to glue it. But now I can see it on the top. Gonna bother the crap out of me.
Oh well


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 Post subject: Re: Top split
PostPosted: Sun May 20, 2018 4:16 am 
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SnowManSnow wrote:
Gah .
Was able to glue it. But now I can see it on the top. Gonna bother the crap out of me.
Oh well

And that is why you should learn how to use hide glue :)

Scrap it.


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 Post subject: Re: Top split
PostPosted: Sun May 20, 2018 4:59 am 
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How expensive was the top wood? If it was modest to average, I would scrap it.


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 Post subject: Re: Top split
PostPosted: Sun May 20, 2018 6:24 am 
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Brazilian Rosewood
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start over or make it a burst.
Learn to look close for wind breaks they are notorious can hide and show at the last minute

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 Post subject: Re: Top split
PostPosted: Sun May 20, 2018 9:12 am 
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Brazilian Rosewood
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Set it aside, save it for later. As mentioned, for a burst or a painted top it might be fine. Right now it's an aggrivation. At least it happened fairly early in the process.

I like to tap and flex the plates after jointing and gluing them together, but before final thicknessing. If one is a "dud" for whatever reason I set it aside and use it for something else.


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 Post subject: Re: Top split
PostPosted: Sun May 20, 2018 11:58 am 
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Brazilian Rosewood
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When I used Titebond for joining tops in most cases you could not really see the glue line. I agree HHG is better in that regard and now use it but still....

I'm wondering if you just need to sand the top good.


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 Post subject: Re: Top split
PostPosted: Sun May 20, 2018 2:23 pm 
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SnowManSnow wrote:
Yea.
So I routed the area where the rosette would go. Took the top out to get the sea dust out of the groove..

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I’m just curious how you got sea dust in the rosette channel. That’s your problem right there. Lol.


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 Post subject: Re: Top split
PostPosted: Sun May 20, 2018 7:47 pm 
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Cocobolo
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jac68984 wrote:
SnowManSnow wrote:
Yea.
So I routed the area where the rosette would go. Took the top out to get the sea dust out of the groove..

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I’m just curious how you got sea dust in the rosette channel. That’s your problem right there. Lol.


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:) after let it soak on the lagoon for a day some of the dust jut got stuck in the channel:)




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 Post subject: Re: Top split
PostPosted: Sun May 20, 2018 8:06 pm 
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Oh, Giligan.




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