Official Luthiers Forum!

Clamp time for fish glue varies greatly, from what I can tell. I tested some stressed joints (2 pieces of 1/4" x 1/4" spruce bent into my 15' radius form) and there is absolutely no creep several years later after as little as 15 minutes clamp time. Warm temp, 45% humidity.

The 12 hours might be true for gluing to oily or non-porous wood. But spruce on spruce is quick. It's easy to do a few tests.

_________________
http://www.chassonguitars.com

[QUOTE=DP LaPlante]Though fish glue was used and heartily recommended at the Romanillos course, Jose' did not prefer it over Titebond for joining spruce. He felt that the glue line was more visible with fish glue and less so with Titebond.[/QUOTE]

Dave, didn't they use Fish Glue for gluing Dentillones at the Romanillos course?  And, wasn't that done by hand, holding them in place for, say a count of 20, then move on to the next one.  Also, isn't that joint under a bit of stress due to the 90* angle of top to rib along the edge of the lower bout, when the rest is scooped out?

_________________
Waddy

Photobucket Build Album Library

Sound Clips of most of my guitars

Waddy,

Yes, we used the fish glue for gluing the glue blocks (peonies or dentellones <"Teeth"> if you prefer) at the top to side join. I brought along a little pick-like tool that I use to spear these and hold them in place as you describe.

As for the joint angle I gave the ones at the lower bout a swipe or two on a sanding plate to increase the angle a bit to accomodate the doming of the top.

 

 

 

-