The Acoustic Guitar Forum

The Acoustic Guitar Forum (https://www.acousticguitarforum.com/forums/index.php)
-   Build and Repair (https://www.acousticguitarforum.com/forums/forumdisplay.php?f=44)
-   -   Proper neck set for a Martin 00-18 (https://www.acousticguitarforum.com/forums/showthread.php?t=581932)

Adam 12 05-21-2020 11:10 PM

Proper neck set for a Martin 00-18
 
Hi Everyone,

I am building a replica of my old Martin 00-18. I have built several guitars using the pinned mortis and tenon neck joint from the Cumpiano and Natelson book. They all worked great, but I am building a replica and my old guitar has a dovetail neck joint.
I have not made a dovetail neck joint before, though I have made many practice dovetails. There are a few things that I could use help with: should I cut my heel block off at a 90 degree angle to the fretboard? Is there a better angle that will make it easier to set the neck? How long should the male part of the dovetail joint be?
Any help with this will be greatly appreciated.

Thanks!

Adam 12

Skarsaune 05-22-2020 03:51 AM

Quote:

Originally Posted by Adam 12 (Post 6388155)
There are a few things that I could use help with: should I cut my heel block off at a 90 degree angle to the fretboard? Is there a better angle that will make it easier to set the neck? How long should the male part of the dovetail joint be?

It needs to be a little off of 90 so your string height at the bridge location is high enough. On the dreadnoughts Ive built & worked on, it comes out to 1 1/2 degrees, or 88.5.

On the guitars Im most familiar with, the tenon is in the 5/8 range.

Adam 12 05-22-2020 06:47 PM

Thanks to Skarsaune
 
Hi Skarsaune,

I appreciate the input. That sounds about right; when I drew my plan it came out about 1 degree off 90. It looks like a tenon length of 5/8 will put it right under the 15th fret and allow removal at some future date.

Thanks again,

Adam 12

murrmac123 05-24-2020 12:23 PM

Hi Adam , and welcome to the forum !

You most likely are already aware of it, but just in case, you need to leave a small gap between the end of the tenon and the back of the neck-block mortise, to facilitate later removal, should it ever be needed.

Also, never put any glue on the tenon shoulders ( frequently misnamed as the tenon "cheeks").

Adam 12 05-24-2020 06:25 PM

Thanks to Murrmac 123
 
Hi Murrmac 123

Thanks for your suggestions. I will leave about 3/32 clear at the end of the tenon; from what I am reading I gather that this will help with neck removal in the future.
As far as the shoulders go, are you referring to the part of the heel that will make contact with the body of the guitar?

Thanks again,

Adam 12

Skarsaune 05-25-2020 05:17 AM

Quote:

Originally Posted by Adam 12 (Post 6391119)
As far as the shoulders go, are you referring to the part of the heel that will make contact with the body of the guitar?

Thanks again,

Adam 12

That is correct. No glue there.

Adam 12 05-25-2020 08:14 AM

Got it.
Thanks for the help.

Adam


All times are GMT -6. The time now is 10:04 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Copyright ©2000 - 2020, The Acoustic Guitar Forum

vB Ad Management by =RedTyger=