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 Post subject: neck angle issues
PostPosted: Sat Dec 20, 2008 8:47 pm 
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Brazilian Rosewood
Brazilian Rosewood
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Joined: Wed Sep 24, 2008 8:55 pm
Posts: 3513
Location: Taiwan
First name: Tai
Last Name: Fu
City: Taipei
Country: Taiwan
Focus: Repair
Status: Semi-pro
On my first build I am having issues with the neck angle. if I angle the neck flat and not following the angle on the upper bout then everything lines up. However if I attempt to angle the neck to match the upper bout then the straight edge will sit too high off of the bridge (which will require a very tall saddle to have workable action) however the problem is if I don't match the upper bout then there will be a gap between the fretboard extension and the soundboard. I think next time I will not sand the upper bout so much in the radius dish to avoid this problem in the future....

The problem is the only way that I can see to bring the action to usable level while matching neck angle to the upper bout is to shave the fingerboard or something or make a really big bridge. The gap is only visual (I hope) so I don't think playability is an issue... but it just looks so dammed ugly that you can see daylight through the fretboard extension and see the tenon and stuff...

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Cat-gut strings are made from kitten guts, stretched out to near breaking point and then hardened with grue saliva. As a result these give a feeling of Pain and anguish whenever played, and often end up playing themselves backwards as part of satanic rituals.

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 Post subject: Re: neck angle issues
PostPosted: Sun Dec 21, 2008 5:28 am 
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Mahogany
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Joined: Tue Jan 22, 2008 8:32 pm
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Location: Canada
If I understand your problem correctly I think you might take a look at Hesh's tutorial about truing the upper bout. Seems to relate directly to what your problem is. Its in the archive of tutorials.
Warren.


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 Post subject: Re: neck angle issues
PostPosted: Sun Dec 21, 2008 6:47 am 
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Contributing Member
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Joined: Thu Jun 12, 2008 6:59 am
Posts: 1946
Location: Rochester Michigan
Such short memory spans laughing6-hehe I had this same problem two weeks ago:

viewtopic.php?f=10122&t=19963

I planed the top flat some and sanded the bottom of the FB extension some and now everything works out perfectly.

Good luck.

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 Post subject: Re: neck angle issues
PostPosted: Sun Dec 21, 2008 7:58 am 
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Old Growth Brazilian Rosewood
Old Growth Brazilian Rosewood
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Joined: Fri Nov 02, 2007 9:49 am
Posts: 10270
Location: Ann Arbor, Michigan
First name: Hesh
Last Name: Breakstone
Country: United States
Status: Professional
Good Job Andy!!! [:Y:] [clap] [clap] [clap] [clap] [clap]

Tai Fu the taller bridge is a long walk down a short pier. Instead look at Andy's thread from last week and let us know if you have any questions?


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 Post subject: Re: neck angle issues
PostPosted: Sun Dec 21, 2008 12:32 pm 
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Brazilian Rosewood
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Joined: Mon Jan 28, 2008 5:21 am
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Location: Central PA
First name: john
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City: Hegins
State: pa
Zip/Postal Code: 17938
Country: usa
Focus: Build
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The understanding of the geometry of the top is key. The more you build the more you learn. http://bluescreekguitars.com/blog/
this link may help you understand one of the many techniques to get the sides to help the top accept the geometry .
john

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PostPosted: Thu Feb 26, 2009 3:17 am 
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Brazilian Rosewood
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Joined: Wed Sep 24, 2008 8:55 pm
Posts: 3513
Location: Taiwan
First name: Tai
Last Name: Fu
City: Taipei
Country: Taiwan
Focus: Repair
Status: Semi-pro
So the cartridge sits in the neck pocket or heel which raises neck angle??

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Cat-gut strings are made from kitten guts, stretched out to near breaking point and then hardened with grue saliva. As a result these give a feeling of Pain and anguish whenever played, and often end up playing themselves backwards as part of satanic rituals.

Typhoon Guitars
http://www.typhoon-guitars.com


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PostPosted: Thu Feb 26, 2009 3:35 pm 
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Old Growth Brazilian
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Joined: Tue Dec 28, 2004 1:56 am
Posts: 10707
Location: United States
Tai Fu wrote:
So the cartridge sits in the neck pocket or heel which raises neck angle??


Cartrige???


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 Post subject: Re: neck angle issues
PostPosted: Sat Mar 07, 2009 2:14 pm 
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Mahogany
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Joined: Tue Jan 20, 2009 5:45 pm
Posts: 53
Location: North Georgia
Help!!! I can not get to Hesh's tut on Dome leveling anymore. I was at http://luthiersforum.3element.com/pages ... ng_jig.htm . That is a great write up!

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 Post subject: Re: neck angle issues
PostPosted: Sat Mar 07, 2009 4:44 pm 
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Koa
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Joined: Wed Apr 18, 2007 6:46 am
Posts: 1012
Location: Issaquah, Washington USA
John, without the head and tail blocks in don't the sides flex a lot when you are sanding? Is the pipe placed half way between the top end and bottom end of the body or at the highest point of the sides?

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 Post subject: Re: neck angle issues
PostPosted: Sat Mar 07, 2009 5:32 pm 
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Koa
Koa

Joined: Fri Jun 30, 2006 4:23 pm
Posts: 1694
Location: United States
First name: Lillian
Last Name: Fuller-Watson
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Country: USA
Focus: Build
Status: Amateur
Eddie, I might have saved a copy of Hesh's tutorial on my home computer. I'll look when I get home. In the mean time you might be able to glean what you need from this thread.

http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=20177

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 Post subject: Re: neck angle issues
PostPosted: Sun Mar 08, 2009 12:15 pm 
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Koa
Koa

Joined: Fri Jun 30, 2006 4:23 pm
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Location: United States
First name: Lillian
Last Name: Fuller-Watson
State: WA
Country: USA
Focus: Build
Status: Amateur
Eddie, I dug through my archived web pages and unfortunately that was one that I didn't grab. Sorry. Hope the other link helps.

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