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-   -   Kinnaird Alpine Spruce/Brazilian (https://www.acousticguitarforum.com/forums/showthread.php?t=376200)

invguy921 02-18-2015 02:47 PM

Kinnaird Alpine Spruce/Brazilian
 
Well, some of you know that I had a custom guitar built and completed about 8 months ago. I then began a another custom with the same builder, and ultimately sold the build slot midway through. After some further evaluation and study on the subject, I had "firmly decided not to do another custom". (and yes there is more to the story...LOL)

I then bought a used guitar that had been built in 2011 by John Kinnaird. I liked it so much that I decided to inquire of John about another Brazilian OM that I thought he had for sale. John told he told me that it had been sold...but then he said the magic words..."that he could build me a comparable one to my specs". You guessed it...after some discussion with John I agreed to have him build the very custom guitar that not long before had "firmly decided" not to do. Oh well, such is life, huh? ;) Guitar Acquisition Syndrome strikes again, ha!

This guitar will be an "OM size" guitar with a cutaway. Woods will be Old growth Brazilian Rosewood with Alpine Spruce, Cocobolo binding, with some touches of Coco/curly maple purfling, etc. It will be a 14 fret guitar with a soft cutaway. Gotoh tuners, Gold Jescar frets, a little bit of Paua abalone here and there, a soundport. All aspects are subject to modification, but this is the general idea on the woods, etc.

General measurements:

Nut: 1 3/4
Lower bout 15.125 inches
Waist 9.25 inches
Upper bout 11.375 inches
Depth at butt end 4 inches
Depth at heel 3.5 inches
Length 19.5 inches

Here's the wood:

http://i749.photobucket.com/albums/x...psfcb15154.jpg

http://i749.photobucket.com/albums/x...ps7f08cbcb.jpg

TomB'sox 02-18-2015 03:25 PM

Congrats on the new build, always very exciting. Great looking woods!

invguy921 03-03-2015 11:07 AM

Progress...
 
Here are a few progress pictures that John sent me recently. This is when hunks of raw wood start thinking about becoming a guitar ;)

http://i749.photobucket.com/albums/x...psahvdsudx.jpg

http://i749.photobucket.com/albums/x...psgqsjtvvz.jpg

MBE 03-03-2015 11:13 AM

That is a great looking set of BRW. In John's hands, you know you're going to be in for a heck of a guitar. Looking forward to seeing this one come together!

invguy921 03-03-2015 11:18 AM

Quote:

Originally Posted by MBE (Post 4386298)
That is a great looking set of BRW. In John's hands, you know you're going to be in for a heck of a guitar. Looking forward to seeing this one come together!

Thank you! I studied this hard prior to making this decision. After getting John involved in the build process, I am REALLY enjoying working with him. He's super responsive, offers lots of great ideas, and is making this custom build fun. Not to mention I've seen his work first hand and know this special guitar is in good hands!

Marcus Wong 03-03-2015 11:28 AM

This is a wonderful start, I can't wait to see more! I love the look of the side braces. I wonder what John has to say about them compared to double sides for example.

j. Kinnaird 03-03-2015 05:27 PM

I think the laminated linings, considering their thickness and the fact that rigidity is proportional to the square of the thickness, are at least as rigid as a laminated side. Perhaps more rigid, I haven't actually done the math. I like using solid wood. There is something authentic with solid wood that seems to be missing from laminates, and I wonder about the ability of laminated wood to evolve and become more sonorous over time.

Having said that, sides don't make a big contribution to sound and that lining is laminated. It could be a wash. Laminated sides are hard to crack. If you are concerned about stability laminated sides are more stable and you won't lose much if any tone.

Marcus Wong 03-03-2015 08:12 PM

Quote:

Originally Posted by j. Kinnaird (Post 4386930)
I think the laminated linings, considering their thickness and the fact that rigidity is proportional to the square of the thickness, are at least as rigid as a laminated side. Perhaps more rigid, I haven't actually done the math. I like using solid wood. There is something authentic with solid wood that seems to be missing from laminates, and I wonder about the ability of laminated wood to evolve and become more sonorous over time.

Having said that, sides don't make a big contribution to sound and that lining is laminated. It could be a wash. Laminated sides are hard to crack. If you are concerned about stability laminated sides are more stable and you won't lose much if any tone.

Hey John! Thanks so much for the reply. That is quite insightful. I really like the idea of side braces for the same reasons you have stated above and it is indeed an elegant solution :) Looking forward to the rest of this amazing build.

iim7V7IM7 03-03-2015 08:34 PM

Quote:

Originally Posted by j. Kinnaird (Post 4386930)
I think the laminated linings, considering their thickness and the fact that rigidity is proportional to the square of the thickness, are at least as rigid as a laminated side. Perhaps more rigid, I haven't actually done the math. I like using solid wood. There is something authentic with solid wood that seems to be missing from laminates, and I wonder about the ability of laminated wood to evolve and become more sonorous over time.

Having said that, sides don't make a big contribution to sound and that lining is laminated. It could be a wash. Laminated sides are hard to crack. If you are concerned about stability laminated sides are more stable and you won't lose much if any tone.

Some luthiers use both laminated hardwood sides and solid linings in combination. Here is an example of a guitar made with solid catalpa linings used together with laminated hardwood sides (inner layer was Port Orford Cedar).

http://i1238.photobucket.com/albums/...psc8ufrypv.jpg

Chedeng88 03-05-2015 03:59 PM

I just discovered this thread today. Subscribed! :)

Perfect wood choices, perfect specs! I probably wouldn't have done it any other way if I were to commission a build today.

Looking forward to seeing the finished guitar!

invguy921 03-06-2015 11:52 AM

Progress
 
Well, we're getting this baby braced up and ready to jam. Here's also a slight change we made to the Purfling/binding strategy using Coco and curly sycamore, and some bloodwood for good measure.

http://i749.photobucket.com/albums/x...ps64o3vkeh.jpg

http://i749.photobucket.com/albums/x...pscc9ioemj.jpg

Nemoman 03-06-2015 11:57 AM

Looking great, Mike--really love the back and side set you've got on this! I'm sure it will sound spectacular as well...

Steve Kinnaird 03-06-2015 10:40 PM

Lookin' good! Always a treat to see my bro's work.
Brazilian RW, and it looks cedar linings. This guitar will smell heavenly.
Unless... well... did his cat visit the project in the last photo? :wink:

Steve

j. Kinnaird 03-07-2015 05:18 PM

Thanks bro. No cats in this one yet. The shop cat has been using another box.
It should smell like an old time pencil but on the plus side no moths to contend with.

counsel1 03-07-2015 06:40 PM

Another happy J. Kinnaird OM owner--
 
The acoustic I have kept the longest (and more importantly, the guitar I play daily) is my 2002 Kinnaird OMK (#33) -- I believe that it is a little deeper than a "standard" OM -- which to me really makes a positive difference, especially with the lower register-
Are you going with a pyramid bridge?

You'll be pleased to know that that my wildly-figured, slab-cut Brazilian back & sides remain stable and crack-free after 13 years.

I know you will be delighted with yours!
Great choice!


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