Acoustic Guitar Construction

This is very interesting - hot hide glue apparently is not a very good gap filling adhesive. Other interesting test results as well.

http://www.oldbrownglue.com/pdf/HowStro ... ue_FWW.pdf

Really interesting. Why use epoxy for the x-joint when the titebond is better than/equal to the epoxy?

Because Epoxy will fill any gaps better.

I love using Titebond because it is simple to use and works great. I am thinking about HHG for things we might want to easily reverse for repairs though. Possibly the bridge and fretboard. I know Titebond is pretty easy to get to release, but it still leaves a lot of glue behind that you need to sand off. HHG would allow a clean bridge replacement if it were ever needed down the road.
I never glue my necks or fretboard extensions.

Gaps? Are you nuts? We don't leave no stinkin' gaps. :-)

I've got some hhg granules here but still cannot find a compelling reason to use the stuff. And that's because I'm lazy, probably. Another thing to have to tend to. Short open time. Etc. But the easy clean-up does go in its favor.

BTW, do you use the epoxy, Tony? What kind?

Only for pore filling. I use z-poxy for that.

One of the biggest benefits for HHG is that it is the only glue that actually pulls the joint tighter as it dries. The others remain in place, or expand, as in Gorilla Glue.

One of the biggest benefits for HHG is that it is the only glue that actually pulls the joint tighter

Please expand this thought - I have never heard such a claim as HHG singularly having this characteristic, HHG has water just like Titebond, Elmer's etc. all catalyze with oxygen and draw the porous surfaces together via evaporation.