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Gluing 'Bottom' wood on for more thickness?
http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=24442		 Page 1 of 1
Author:  Frei [ Tue Nov 03, 2009 9:33 pm ]
Post subject:  Gluing 'Bottom' wood on for more thickness?
I got a great deal on some Spanish cedar necks, but some are pretty thin.near 1/2 inch to 3/4, but I would like to glue on at least 1/4 inch more of wood to make them thicker, to the bottoms, but havent heard of this, only gluing side x side with a stripe of wood or something. Any forseeable problems in this kind of glueup? Use expoxy or just HHG?
Author:  Jon L. Nixon [ Tue Nov 03, 2009 9:47 pm ]
Post subject:  Re: Gluing 'Bottom' wood on for more thickness?
If you are planning to add a 1/4" fingerboard, those dimensions are about right. How thick do you want your finished neck to be?
Author:  Frei [ Tue Nov 03, 2009 10:04 pm ]
Post subject:  Re: Gluing 'Bottom' wood on for more thickness?
These are baroque guitar necks, the fingerboard is slanted. The necks need to be near 1" to carve properly. The extra wood is sandwitched to the bottom so the footprint is smaller. Never heard of a glued up neck that way.
Author:  Corky Long [ Wed Nov 04, 2009 10:36 am ]
Post subject:  Re: Gluing 'Bottom' wood on for more thickness?
The only issue I would foresee is consmetic. I've been laminating my necks in several dimensions for awhile. Was using LMI white glue - now using HHG. Both work fine. I don't think you'll have any structure issues if the neck blanks are well aged and truly flat.

If you can match the grain it will be fine. If not, how about a thin laminate of an alternating wood for color? Hard to picture where it will be visible on the neck, but could be a cool effect.
Author:  Link Van Cleave [ Wed Nov 04, 2009 11:42 am ]
Post subject:  Re: Gluing 'Bottom' wood on for more thickness?
Could you add the wood to the top so when you carve you don't get glue lines showing up ? I don't know what those necks look like so just a thought.

For the tightest joint and least visible glue line , use LMI, titebond 1, hide, uni-bond. These glues you can clamp pretty tightly. I wouldn't use epoxy. Too viscus. Likes a large glue line and if you clamp tight enough to make the glue line small you run the risk of starving the joint. You don't want to clamp epoxy hard, just enough to hold parts together however this isn't conducive to a small nearly invisible glue line.
Link
Author:  Frei [ Wed Nov 04, 2009 4:29 pm ]
Post subject:  Re: Gluing 'Bottom' wood on for more thickness?
When I think about it, it may be better to glue on top as that is true flat, I have to take the whole thing apart otherwise, as they are one piece necks, bottom is bandsawn, top is at least perfect flat. Thats fine, I can practice my V joints with these. I think a maple stripe inbetween would be very cool, you never see horizontal neck glue ups. But now they arent going to be $8.00 necks, more like $12.00's :shock:

If you like wooden peg-classical necks, you might go get a deal, look under Spanish Cedar!
Author:  wbergman [ Wed Nov 04, 2009 7:29 pm ]
Post subject:  Re: Gluing 'Bottom' wood on for more thickness?
If not already noted, use the thinner ones to stack for heels, or use them for interior tail blocks, back bracing, lingings, etc.
Author:  Frei [ Wed Nov 04, 2009 7:39 pm ]
Post subject:  Re: Gluing 'Bottom' wood on for more thickness?
They are almost all too thin. I will supplement with some more (mismatched?) cedero, and do the headstocks separate, which is the proper way to do Baroque style V neck guitar headstocks anyway. Too bad, these were one piece necks, could have been plenty thick.BTW, BobC's cousin usually helps me out with bridge plates and this kind of stuff.
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