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  #1  
Old 10-23-2019, 11:34 AM
Madsenguitars Madsenguitars is offline
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Smile Madsen Koa Jumbo

This will be a first thread on the Acoustic Guitar Forum for Madsen Guitars, if there are any mistakes or critiques please let me know. That being said, I'm not new to the luthier industry but new to using the Forum to display my work. In all truths I've paid to be a sponsor for three years and been too busy or reclusive to draw attention on this platform. After some encouragement from other users of the Forum, I have decided its about time to contribute to the discussion on here. So here we go!

This custom order was placed last May and I've been excited all summer to get started on it. The customer who this is being built for had been searching for a very outstanding set of Koa for this specific build, and boy did we find a good one! He has several custom builds from other distinguished luthiers and I'm very appreciative to have an opportunity to get one of mine among his stable of guitars. There are some other special items that will be included in this build along the way that should be interesting including, a custom inlay for the rosette/inner Soundhole as well as a corresponding Baritone Ukulele that will be built along the way from the scrap pieces of Koa. Stay tuned for more photos and details in the coming days and weeks!

Madsen #142
Body Shape: Jumbo with Florentine Cutaway
Scale: 25.5"
Nut-Saddle Width: 1.75"-2.125"
Soundboard: Bear Claw AAA Engelmann Spruce
Back & Sides: Highly Figured "Stress" Koa
Brace Wood: Red Spruce
Binding Material: Brazilian Rosewood w/b-w-b
Purfling: Black/Maple/ Black with Koa accent
Body Details: Arm Bevel in Brazilian Rosewood
Rosette: Pearl inner and Outer Rings- Brazilian Back Ground with center Koa Ring with Looping Mother of Pearl accent around center ring
Fingerboard: Ebony with Flamed Koa border line inside of Ebony binding
Headstock: Snake head shape with Ebony Veneer and Koa binding trim
Neck: 5-Piece Mahogany- Maple- Brazilian Rosewood- Maple- Mahogany
Truss Rod: 2-Way Rod with dual graphite rods
Bridge: Brazilian Rosewood with Bone inlayed Pins 3 degree
Tuners: Gotoh 510 Delta 21:1 Ratio
Frets: EVO Gold Medium
Finish: Seagrave Catalyzed Urethane Gloss body and Neck


"Stress" Koa Back - Quite Impressive Stuff

[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]

Bear Claw AAA Engelmann Spruce (Photo is taken outside with Naphtha wiped on)

[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]

"Stress" Koa Sides pre-bent (Sides will be laminated to another set of Koa for stability, these pieces want to brake just being held)

[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]

5-Piece Neck and Brazilian Center Strip

[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]

[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]

Koa Back all Braced and Center Seamed with Red Spruce

[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]

[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]

Jumbo Florentine Cutaway Body Template

[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]

Baritone Ukulele Koa Back and Engelmann Spruce Soundboard

[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]

[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]

Last edited by Madsenguitars; 10-29-2019 at 02:09 PM. Reason: typo
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  #2  
Old 10-23-2019, 11:51 AM
Nemoman Nemoman is offline
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Welcome to the forum--or to the posting aspects, anyways!

Looks like you're off to a great start with an awesome set of woods. Looking forward to following along...
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  #3  
Old 10-23-2019, 12:58 PM
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TomB'sox TomB'sox is offline
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I concur, any builds are always fun to watch, and wow what a set of Koa and the Bear Claw spruce is an amazing piece also. This should be beautiful when finished.
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  #4  
Old 10-23-2019, 01:24 PM
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Quote:
Originally Posted by Nemoman View Post
Welcome to the forum--or to the posting aspects, anyways!

Looks like you're off to a great start with an awesome set of woods. Looking forward to following along...
Those are some BEAUTIFUL wood sets!!! Have fun building and we will enjoy following along!

Paul
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  #5  
Old 10-23-2019, 02:19 PM
GeoffStGermaine GeoffStGermaine is offline
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Looks like this will be quite a pair of instruments! Looking forward to seeing both of these builds come together.
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  #6  
Old 10-27-2019, 08:24 PM
Madsenguitars Madsenguitars is offline
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Quote:
Originally Posted by Madsenguitars View Post
This will be a first thread on the Acoustic Guitar Forum for Madsen Guitars, if there are any mistakes or critiques please let me know. That being said, I'm not new to the luthier industry but new to using the Forum to display my work. In all truths I've paid to be a sponsor for three years and been too busy or reclusive to draw attention on this platform. After some encouragement from other users of the Forum, I have decided its about time to contribute to the discussion on here. So here we go!



This custom order was placed last May and I've been excited all summer to get started on it. The customer who this is being built for had been searching for a very outstanding set of Koa for this specific build, and boy did we find a good one! He has several custom builds from other distinguished luthiers and I'm very appreciative to have an opportunity to get one of mine among his stable of guitars. There are some other special items that will be included in this build along the way that should be interesting including, a custom inlay for the rosette/inner Soundhole as well as a corresponding Baritone Ukulele that will be built along the way from the scrap pieces of Koa. Stay tuned for more photos and details in the coming days and weeks!



Madsen #142

Body Shape: Jumbo with Venetian Cutaway

Scale: 25.5"

Nut-Saddle Width: 1.75"-2.125"

Soundboard: Bear Claw AAA Engelmann Spruce

Back & Sides: Highly Figured "Stress" Koa

Brace Wood: Red Spruce

Binding Material: Brazilian Rosewood

Purfling: Black/Maple/ Black with Koa accent

Body Details: Arm Bevel in Brazilian Rosewood

Rosette: Pearl inner and Outer Rings- Brazilian Back Ground with center Koa Ring with Looping Mother of Pearl accent around center ring

Fingerboard: Ebony with Flamed Koa border line inside of Ebony binding

Headstock: Snake head shape with Ebony Veneer and Koa binding trim

Neck: 5-Piece Mahogany- Maple- Brazilian Rosewood- Maple- Mahogany

Truss Rod: 2-Way Rod with dual graphite rods

Bridge: Brazilian Rosewood with Bone inlayed Pins 3 degree

Tuners: Gotoh 510 Delta 21:1 Ratio

Frets: EVO Gold Medium

Finish: Seagrave Catalyzed Urethane Gloss body and Neck





"Stress" Koa Back - Quite Impressive Stuff



[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]



Bear Claw AAA Engelmann Spruce (Photo is taken outside with Naphtha wiped on)



[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]



"Stress" Koa Sides pre-bent (Sides will be laminated to another set of Koa for stability, these pieces want to brake just being held)



[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]



5-Piece Neck and Brazilian Center Strip



[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]



[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]



Koa Back all Braced and Center Seamed with Red Spruce



[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]



[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]



Jumbo Venetian Cutaway Body Template



[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]



Baritone Ukulele Koa Back and Engelmann Spruce Soundboard



[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]



[IMG]Madsen Parts and Progress for Jumbo #142 by Andrew Madsen, on Flickr[/IMG]

https://www.amazon.com/photos/shared...2wJ26rQN6pBQCc
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  #7  
Old 10-28-2019, 05:30 AM
jmagill jmagill is offline
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Quote:
Originally Posted by Madsenguitars View Post

Jumbo Venetian Cutaway Body Template

Just as a clarification, the drawing of the cutaway on this template is florentine, not venetian. A handy way to remember them is florentine ends with 'tine' like the tines on a fork pointy.

So will your guitar have a florentine or venetian cutaway?
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  #8  
Old 11-11-2019, 12:28 PM
Madsenguitars Madsenguitars is offline
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Quote:
Originally Posted by jmagill View Post
Just as a clarification, the drawing of the cutaway on this template is florentine, not venetian. A handy way to remember them is florentine ends with 'tine' like the tines on a fork pointy.



So will your guitar have a florentine or venetian cutaway?


Sorry for the confusion, it is a Florentine cutaway.
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  #9  
Old 11-11-2019, 12:38 PM
Madsenguitars Madsenguitars is offline
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IMG_0105.jpg
Koa Sides bent and Laminated to another layer of Koa

IMG_0111.jpg
Tail Block and sides glued up

IMG_0115.jpg
Neck Block Assembly

IMG_0120.jpg
Top Kerfed and Blocks in

IMG_0168.jpg
Brazilian Rosewood- Koa - Pearl Rosette

IMG_0172.jpg
Rosette and Sound-hole trim installed
Attached Images
File Type: jpg IMG_0177.jpg (48.6 KB, 164 views)
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  #10  
Old 11-14-2019, 02:57 PM
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Cornerstone Guitars Cornerstone Guitars is offline
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Nice loot wood! Looking forward to seeing it progress
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  #11  
Old 11-15-2019, 01:42 AM
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colins colins is offline
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Love that koa! Thanks for starting the thread.
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  #12  
Old 11-17-2019, 03:44 PM
mischultz mischultz is offline
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Quote:
Originally Posted by Madsenguitars View Post
Attachment 29296
Koa Sides bent and Laminated to another layer of Koa
This utterly fails to be terrible. Always fascinating to see what's transpiring inside of trees.
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