I haven't seen one of Mac's Musings in a while, so humbly offer up this
installment of Kevin's Conundrums instead. I'm stumped. When glue is
in the bottle, it doesn't dry. I presume because of the lack of
significant contact with air. You smear it on a piece of wood and slap
another piece on it, and presto, it dries. But there's no air there
either! What's up w/that? Magic wood fairies or something?


....Kevin
--
Kevin Miller
Juneau, Alaska
http://www.alaska.net/~atftb
In a recent poll, seven out of ten hard drives preferred Linux.

On Jun 17, 11:50 am, Kevin Miller wrote:
I haven't seen one of Mac's Musings in a while, so humbly offer up this
installment of Kevin's Conundrums instead. I'm stumped. When glue is
in the bottle, it doesn't dry. I presume because of the lack of
significant contact with air. You smear it on a piece of wood and slap
another piece on it, and presto, it dries. But there's no air there
either! What's up w/that? Magic wood fairies or something?

...Kevin
--
Kevin Miller
Juneau, Alaskahttp://www.alaska.net/~atftb
In a recent poll, seven out of ten hard drives preferred Linux.


Hello Kevin,

An interesting thought. I'm hardly an expert on glue; however, I've
found that if glue is not spread thin enough between two pieces of
wood, it may not dry well either. I suspect that the wood extracts the
moisture from the thin coat of glue and allows it to set up.

Fred Holder
http://www.morewoodturning.net

Fred Holder wrote:
On Jun 17, 11:50 am, Kevin Miller wrote:
I haven't seen one of Mac's Musings in a while, so humbly offer up this
installment of Kevin's Conundrums instead. I'm stumped. When glue is
in the bottle, it doesn't dry. I presume because of the lack of
significant contact with air. You smear it on a piece of wood and slap
another piece on it, and presto, it dries. But there's no air there
either! What's up w/that? Magic wood fairies or something?

...Kevin
--
Kevin Miller
Juneau, Alaskahttp://www.alaska.net/~atftb
In a recent poll, seven out of ten hard drives preferred Linux.


Hello Kevin,

An interesting thought. I'm hardly an expert on glue; however, I've
found that if glue is not spread thin enough between two pieces of
wood, it may not dry well either. I suspect that the wood extracts the
moisture from the thin coat of glue and allows it to set up.

Hmmm - an interesting thought. I mostly use the Titebond equivalent of
Gorilla Glue which is moisture activeated, but last night I was gluing
up with good old Elmer's Wood Glue and it got me puzzling. Maybe it's
not oxidation at all like I'd always assumed, but in fact good old
literal drying...

....Kevin
--
Kevin Miller
Juneau, Alaska
http://www.alaska.net/~atftb
In a recent poll, seven out of ten hard drives preferred Linux.

"Kevin Miller" wrote in message
ions...
I haven't seen one of Mac's Musings in a while, so humbly offer up this
installment of Kevin's Conundrums instead. I'm stumped. When glue is in
the bottle, it doesn't dry. I presume because of the lack of significant
contact with air. You smear it on a piece of wood and slap another piece
on it, and presto, it dries. But there's no air there either! What's up
w/that? Magic wood fairies or something?

Take a chunk of wood. Weigh it then drop it in a bucket of water. After a
time, pull it out and weigh it again.

Dave Balderstone wrote:
In article ions,
Kevin Miller wrote:

I haven't seen one of Mac's Musings in a while, so humbly offer up this
installment of Kevin's Conundrums instead. I'm stumped. When glue is
in the bottle, it doesn't dry. I presume because of the lack of
significant contact with air. You smear it on a piece of wood and slap
another piece on it, and presto, it dries. But there's no air there
either! What's up w/that? Magic wood fairies or something?

Why do you think there's no air in a wood joint?

May be a slight amount, but certainly much less than in the bottle! I
think Fred is on to it with the wood absorbing the moisture...

....Kevin
--
Kevin Miller
Juneau, Alaska
http://www.alaska.net/~atftb
In a recent poll, seven out of ten hard drives preferred Linux.

"Kevin Miller" wrote in message
ions...
I haven't seen one of Mac's Musings in a while, so humbly offer up this
installment of Kevin's Conundrums instead. I'm stumped. When glue is in
the bottle, it doesn't dry. I presume because of the lack of significant
contact with air. You smear it on a piece of wood and slap another piece
on it, and presto, it dries. But there's no air there either! What's up
w/that? Magic wood fairies or something?


...Kevin
--
Kevin Miller
Juneau, Alaska
http://www.alaska.net/~atftb
In a recent poll, seven out of ten hard drives preferred Linux.


Have you never had to clean out a glue bottle nozzle??? Glue does dry in a
bottle.

Leon wrote:

Have you never had to clean out a glue bottle nozzle??? Glue does dry in a
bottle.

Well sure, but as I noted there's a *little* air in the bottle. And
when I've cleaned my nozzles they're usually pretty goopy, not a fully
hardened mass. Maybe if they sat for 6 months...

....Kevin
--
Kevin Miller
Juneau, Alaska
http://www.alaska.net/~atftb
In a recent poll, seven out of ten hard drives preferred Linux.

"Kevin Miller" wrote in message
mmunications...
Leon wrote:

Have you never had to clean out a glue bottle nozzle??? Glue does dry in
a bottle.

Well sure, but as I noted there's a *little* air in the bottle. And when
I've cleaned my nozzles they're usually pretty goopy, not a fully hardened
mass. Maybe if they sat for 6 months...


Might be a temperature thing. LOL.. Down here in Houston, TX my nozzles
gett prety stopped up with hardened glue. I typically have to pull the cap
off and grab the glue with needle nose plyers.

Any way a sealed bottle contains and prevents the loss of moisture, I think
loss of moisture is required for the glue to cure.



Don't get me started on the polyurethane glues, the humidity is enough to
set that stuff up down here. ;~)

Leon wrote:
"Kevin Miller" wrote in message
mmunications...

Leon wrote:


Have you never had to clean out a glue bottle nozzle??? Glue does dry in
a bottle.

Well sure, but as I noted there's a *little* air in the bottle. And when
I've cleaned my nozzles they're usually pretty goopy, not a fully hardened
mass. Maybe if they sat for 6 months...



Might be a temperature thing. LOL.. Down here in Houston, TX my nozzles
gett prety stopped up with hardened glue. I typically have to pull the cap
off and grab the glue with needle nose plyers.

Any way a sealed bottle contains and prevents the loss of moisture, I think
loss of moisture is required for the glue to cure.



Don't get me started on the polyurethane glues, the humidity is enough to
set that stuff up down here. ;~)



Finger Cots.

--
Jack Novak
Buffalo, NY - USA

each of the various glues hardens by different means.

white/yellow glue by the extraction of moiture
cyanoacrilate by the exclusion of air (and the introduction of certain
catalyzing agents)
poly glue by absorption of moisture
epoxy by catalytic reaction
Silicon adhesive - by absorption of moisture
Hide glue by cooling. (same as hotmelt)
the list goes on, some are catalyzed by UV, some by temperature,


"Nova" wrote in message
...
Leon wrote:
"Kevin Miller" wrote in message
mmunications...

Leon wrote:


Have you never had to clean out a glue bottle nozzle??? Glue does dry
in a bottle.

Well sure, but as I noted there's a *little* air in the bottle. And when
I've cleaned my nozzles they're usually pretty goopy, not a fully
hardened mass. Maybe if they sat for 6 months...



Might be a temperature thing. LOL.. Down here in Houston, TX my nozzles
gett prety stopped up with hardened glue. I typically have to pull the
cap off and grab the glue with needle nose plyers.

Any way a sealed bottle contains and prevents the loss of moisture, I
think loss of moisture is required for the glue to cure.



Don't get me started on the polyurethane glues, the humidity is enough
to set that stuff up down here. ;~)

Finger Cots.

--
Jack Novak
Buffalo, NY - USA