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 Post subject: Plate joining with tape
PostPosted: Wed Aug 16, 2017 11:06 pm 
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Joined: Mon Jan 23, 2017 7:26 pm
Posts: 70
Have any of you ever done it like this? It looks like it would work pretty good.

https://www.youtube.com/watch?v=vwjsIp44z3k


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PostPosted: Thu Aug 17, 2017 5:56 am 
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Joined: Sat May 28, 2016 8:48 am
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Location: Savannah, GA
I did my last 2 tops like that and it worked pretty good. I didn't want to use the same method that I use for my backs because the wood is so much softer. Time will tell...but I'm sure all of the bracing just acts to make it even stronger in the end.

V/R
Ken


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PostPosted: Thu Aug 17, 2017 6:06 am 
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Joined: Mon Jul 28, 2014 7:50 am
Posts: 425
Location: Chadds Ford, PA
Yup, I do this. John Hall showed me this technique in 2015 and I haven't gone back to my old way. Make sure you mark where the centerline is; the tape method works well enough to make it hard to find afterwards.


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PostPosted: Thu Aug 17, 2017 7:48 pm 
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Joined: Mon Jan 23, 2017 7:26 pm
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Thanks guys. Do you shellac the top or anything to keep the tape from tearing out the grain?


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PostPosted: Thu Aug 17, 2017 9:31 pm 
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Joined: Mon Jul 28, 2014 7:50 am
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Location: Chadds Ford, PA
kinspeed wrote:
Thanks guys. Do you shellac the top or anything to keep the tape from tearing out the grain?


You could do that. I was worried about a cedar top I joined in July, but it turned out not to be an issue. Torrified spruce seems to give me a bit more trouble as the wood is somewhat friable. Pull the tape gently and on an angle. I'm joining at full thickness and then planing to thickness afterwards, which of course mitigates any roughness.


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PostPosted: Thu Aug 17, 2017 10:54 pm 
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Thank you Dan!


Last edited by kinspeed on Sun Aug 20, 2017 7:45 pm, edited 1 time in total.

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PostPosted: Fri Aug 18, 2017 7:30 am 
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Joined: Fri Mar 03, 2006 7:09 pm
Posts: 5420
Location: Hegins, Pa
the key is that the joint is mated well. If you force a joint it is doomed to fail

_________________
John Hall
Blues Creek Guitars Inc
Authorized CF Martin Repair Center
Board of Directors of Association of Stringed Instrument Artisans
http://www.bluescreekguitars.com


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PostPosted: Fri Aug 18, 2017 9:00 am 
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Joined: Mon Jul 28, 2014 7:50 am
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Location: Chadds Ford, PA
tippie53 wrote:
the key is that the joint is mated well. If you force a joint it is doomed to fail


That is the key (a universal woodworking truth). Two perfectly straight edges only need enough pressure to squeeze out the proper amount of glue. Tape can do that.


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PostPosted: Fri Aug 18, 2017 3:12 pm 
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That is why you would want to candle it, right?


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PostPosted: Fri Aug 18, 2017 4:34 pm 
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Joined: Mon Jul 28, 2014 7:50 am
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Location: Chadds Ford, PA
kinspeed wrote:
That is why you would want to candle it, right?


Yes. I will post a photo of this as done by Martin as soon as i can figure out where I filed it. Okay i found 'em. The first is the candling station for examining for defects, like pitch pockets. Second shows the joining guy with the candling strip on his left that helps ensure a perfect joint. The third picture Is a better shot of the jointer -- bigger than i remember.


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