How bad was my mistake?
 

Building up a 4X4X30" block of hard maple using 3/4" thick boards.
Never used Gorilla glue before but bought some today and glued on a
board and heavily clamped it, but did not moisten the board as per
directions. (didn't read directions). How much of a problem will this
be? A horribly weak joint or a very strong joint but not as good as
it might be if done correctly?Any comments appreciated.
Allan

How bad was my mistake?
 

"Allan Matthews" wrote in message
...
Building up a 4X4X30" block of hard maple using 3/4" thick boards.
Never used Gorilla glue before but bought some today and glued on a
board and heavily clamped it, but did not moisten the board as per
directions. (didn't read directions). How much of a problem will this
be? A horribly weak joint or a very strong joint but not as good as
it might be if done correctly?Any comments appreciated.
Allan

What will the blank be used for? GG is notoriously weak when it comes to
shock impacts. I would guess (although I don't know) that it would be more
so if you failed to moisten. Also, how dry was the wood when you glued it?

Depending on what the final product is, you may get away with this one. ;-)

jc

How bad was my mistake?
 

In article , Allan Matthews wrote:
Building up a 4X4X30" block of hard maple using 3/4" thick boards.
Never used Gorilla glue before but bought some today and glued on a
board and heavily clamped it, but did not moisten the board as per
directions. (didn't read directions). How much of a problem will this
be? A horribly weak joint or a very strong joint but not as good as
it might be if done correctly?Any comments appreciated.

I've used Gorilla Glue both with, and without, moistening the boards first. It
doesn't seem to make a noticeable difference: either way, the glue bond is
going to be stronger than the wood anyway. Unless you live in the desert,
there's enough moisture in the wood to activate the glue regardless.

--
Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.

How bad was my mistake?
 

On Tue, 24 Apr 2007 22:08:18 -0400, Allan Matthews
wrote:

Building up a 4X4X30" block of hard maple using 3/4" thick boards.
Never used Gorilla glue before but bought some today and glued on a
board and heavily clamped it, but did not moisten the board as per
directions. (didn't read directions). How much of a problem will this
be? A horribly weak joint or a very strong joint but not as good as
it might be if done correctly?Any comments appreciated.
Allan

Block is to be sawn lengthwise on an angle to make two pegboards for a
hammered dulcimer. Glue that was squeezed out was foaming and so I
believe it was activated but am not that familiar with GG..My choices
are to use it or saw it apart and start over.

How bad was my mistake?
 

Allan Matthews wrote:
| On Tue, 24 Apr 2007 22:08:18 -0400, Allan Matthews
| wrote:
|
|| Building up a 4X4X30" block of hard maple using 3/4" thick boards.
|| Never used Gorilla glue before but bought some today and glued on a
|| board and heavily clamped it, but did not moisten the board as per
|| directions. (didn't read directions). How much of a problem will
|| this be? A horribly weak joint or a very strong joint but not as
|| good as it might be if done correctly?Any comments appreciated.
|| Allan
|
| Block is to be sawn lengthwise on an angle to make two pegboards
| for a hammered dulcimer. Glue that was squeezed out was foaming
| and so I believe it was activated but am not that familiar with
| GG..My choices are to use it or saw it apart and start over.

I'd suggest getting input from some other instrument-makers regarding
the acoustical properties of GG. I suspect (but don't know for sure)
that this may be a more important issue than the strength of the
joint...

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/

How bad was my mistake?
 

On Wed, 25 Apr 2007 07:20:26 -0500, "Morris Dovey"
wrote:

Allan Matthews wrote:
| On Tue, 24 Apr 2007 22:08:18 -0400, Allan Matthews
| wrote:
|
|| Building up a 4X4X30" block of hard maple using 3/4" thick boards.
|| Never used Gorilla glue before but bought some today and glued on a
|| board and heavily clamped it, but did not moisten the board as per
|| directions. (didn't read directions). How much of a problem will
|| this be? A horribly weak joint or a very strong joint but not as
|| good as it might be if done correctly?Any comments appreciated.
|| Allan
|
| Block is to be sawn lengthwise on an angle to make two pegboards
| for a hammered dulcimer. Glue that was squeezed out was foaming
| and so I believe it was activated but am not that familiar with
| GG..My choices are to use it or saw it apart and start over.

I'd suggest getting input from some other instrument-makers regarding
the acoustical properties of GG. I suspect (but don't know for sure)
that this may be a more important issue than the strength of the
joint...
Some use GG and some use yellow carpenters glue. The pegboard doesn't
enter into the acoustical properties of the instrument. the strings
pass over nuts and bridges.

How bad was my mistake?
 

On Tue, 24 Apr 2007 22:08:18 -0400, Allan Matthews
wrote:

Never used Gorilla glue before but bought some today and glued on a
board and heavily clamped it, but did not moisten the board as per
directions.

If it cures, it cures properly. The need to moisten the board is only if
you're somewhere especially dry.

OTOH, the stuff's terrible (although not the worst PU glue around). If
I had timber to spare and an accurate bandsaw, I might well saw it apart
and re-glue it with hide glue.

How bad was my mistake?
 

On Wed, 25 Apr 2007 21:55:53 +0100, Andy Dingley
wrote:

On Tue, 24 Apr 2007 22:08:18 -0400, Allan Matthews
wrote:

Never used Gorilla glue before but bought some today and glued on a
board and heavily clamped it, but did not moisten the board as per
directions.

If it cures, it cures properly. The need to moisten the board is only if
you're somewhere especially dry.

OTOH, the stuff's terrible (although not the worst PU glue around). If
I had timber to spare and an accurate bandsaw, I might well saw it apart
and re-glue it with hide glue.


I wouldn't say terrible. I've built several projects using it. All
are still together. I built an outdoor planter/bench where I used GG
on half the joints, Titebond on the other half. There's no
difference. Both are water resistant enough. Nothing's falling
apart. That project has been outside 5 years in SE Wisconsin.

I like GG in some instances for it's long open time. Well, longer
than yellow glue. Yes, foamed material has no strength. But GG in a
properly cut joint is plenty strong enough.

How bad was my mistake?
 

On Apr 24, 7:08 pm, Allan Matthews wrote:
Building up a 4X4X30" block of hard maple using 3/4" thick boards.
Never used Gorilla glue before but bought some today and glued on a
board and heavily clamped it, but did not moisten the board as per
directions. (didn't read directions). How much of a problem will this
be? A horribly weak joint or a very strong joint but not as good as
it might be if done correctly?Any comments appreciated.
Allan

Let it dry while clamped for a fair bit longer than the recommended
time. Gorilla glue will utilize the moisture from the air to cure.
It'll be okay. What are "directions"? Tom

How bad was my mistake?
 

Block is to be sawn lengthwise on an angle to make two pegboards for a
hammered dulcimer. Glue that was squeezed out was foaming and so I
believe it was activated but am not that familiar with GG..My choices
are to use it or saw it apart and start over.

I'd say use it - there should be enough moisture in the air and the
wood to cure just fine. I think the foaming confirms that. Some
people on this group really bash GG (and other polyurethane glues) but
I've used them in a variety of projects and haven't had any problems.
I usually do moisten the surfaces, unless the wood or ambient air are
already holding a lot of moisture. I like the long open time, but
unless I need the time, I usually "stick with" TBII or III, as they're
cheaper and at least as strong.
Good luck,
Andy

How bad was my mistake?
 

Do you have any scrap left over? If so, glue some up using the exact
same circumstances as the original and let it cure. Then try to take
it apart with a hammer, chisel, etc. If the wood fails before the
glue, you're good to go with the original piece.