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doubleneck acoustic bracing?
http://w-ww.luthiersforum.com/forum/viewtopic.php?f=10102&t=7517
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Author:  martinedwards [ Fri Jul 14, 2006 8:10 pm ]
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Hi gang,

I've been asked to build a 6/12 acoustic doubleneck.

Anyone ever done this or know where I could lay my paws on a pic of a bracing pattern other than the Ovation, cos I don't have a spare plastic bath to use as a back.........

Thanks in advance!!martinedwards38913.2162731482

Author:  TonyKarol [ Sat Jul 15, 2006 12:04 am ]
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Been there done that ... here is mine, the X has 20 thou CF laminated in it, the bridge patch is likely a tad heavy at 3/16. I believe the X is sized at 10x18mm. The top is koa obviously, and was about .130 thick. i f I had to do it again (and I ahve been asked by more than one), I would make the neck block(s) one piece - it makes for an easier bend between the necks, as this one is actually two piece, both bent at about 50-60 thou, then epoxied together. You are also seeing a fairly heavy upper transverse, this allowed me to use all bolt on necks (see the thread on neck setting, you can see a neck that I used to use in there, same as for this guitar) It had to be 1/2 inch thick to allow for the mortice and small bolt to go into the FB extensions


Author:  Rod True [ Sat Jul 15, 2006 2:23 am ]
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You got to love a guy who can switch between imperial and metric for building guitars.

Way to go Tony, your so Canadian.

Oh, awsome guitar as usual.

Author:  TonyKarol [ Sat Jul 15, 2006 4:06 am ]
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yeah, weird huh .. some things I only know the measurement in metric, others imperial. Bridges, 6 inches long, saddle slot is 1/8 or 3/16 by 70mm, string spacing is 55 at the bridge, 1 3/4 at the nut !!! Sides 85 thou, backs 100-110 ..goes on and on. after all its just a number right. somethings are jsut easy to split if its metric. I use 25.4 scale, but cut all the slots in mm distances, set the intonation that way as well !!!
Lower bouts, thats in inches. Goofy stuff.

Author:  martinedwards [ Sat Jul 15, 2006 5:14 am ]
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Thanks Tony, that looks great!!

How does having some strings not crossing the soundhole affect the sound? I was thinking about two soundholes with a "figure-of-eight" rosette, but a single would be easier.......

Author:  TonyKarol [ Sat Jul 15, 2006 2:17 pm ]
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I dont know - should it make a difference ??? You are still exciting the top via string vibration - its not like the soundhole has to be under the strings.

Author:  Serge Poirier [ Sat Jul 15, 2006 2:23 pm ]
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Tony, you make me proud to be Canadian buddy!

Awesome work as usual!

Author:  Sam Price [ Sat Jul 15, 2006 6:21 pm ]
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Martin what a challenge!! You're gonna make it with great success; what woods will you use?

Of course there is the option of side upper bout sound ports..

This guitar has one soundhole, but notice it is larger and more oval A-LA Django Reinhardt



Sam Price38914.1407291667

Author:  MSpencer [ Sun Jul 16, 2006 3:44 am ]
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Tony, excellent design!

Mike
White Oak, Texas

Author:  Rod True [ Sun Jul 16, 2006 4:40 am ]
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Nice sofa cover Sam

Author:  TonyKarol [ Sun Jul 16, 2006 4:44 am ]
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Personally, besides the excellent throw, is the heavy duty rocknroll selector switch on that baby !!!

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