anyone know if would glue breaks down at hi temps

say 200-300 f

On 2016-12-24, Electric Comet wrote:

anyone know if would glue breaks down at hi temps

Depends. Is "would glue" anything like "wood glue"?

nb

On Sat, 24 Dec 2016 10:00:15 -0800, Electric Comet
wrote:


anyone know if would glue breaks down at hi temps

Sure. Wood breaks down at high temperature.

say 200-300 f

....something like 451F.

On Sat, 24 Dec 2016 10:00:15 -0800, Electric Comet
wrote:


anyone know if would glue breaks down at hi temps

say 200-300 f









Depends what kind of "wood glue".

Hide glue melts at 150 to 180F.
Casein glue should not be heated beyond about 150F
PVAgoes "plastic" at about 160F

So the short answer to your question is "yes, many wood glues will
fail well below 200 to 300 degrees F"

On Dec 24, 2016, wrote
(in ):

On Sat, 24 Dec 2016 10:00:15 -0800, Electric Comet
wrote:


anyone know if would glue breaks down at hi temps

say 200-300 f
Depends what kind of "wood glue".

Hide glue melts at 150 to 180F.
Casein glue should not be heated beyond about 150F
PVAgoes "plastic" at about 160F

So the short answer to your question is "yes, many wood glues will
fail well below 200 to 300 degrees F"

Also, what do we mean by €œfails€�?

I have two heavy wooden doors bought 10 or 15 years ago that quickly sagged
trapezoidal in the summer heat - the Sun hits them in the afternoon. The
original doors were ratty, but never sagged. The problem is that the door
manufacturer used some kind of plastic based glue (Titebond?) that creeps in
the heat of the day, which is inappropriate in an exterior door. My solution
is a turnbuckle brace, but that door manufacturer needs to use a suitable
glue. Like Resorcinol or epoxy - something that chemically sets, versus being
thermoplastic.

Joe Gwinn

On Saturday, December 24, 2016 at 11:59:38 AM UTC-8, Joseph Gwinn wrote:
On Dec 24, 2016, wrote

I have two heavy wooden doors bought 10 or 15 years ago that quickly sagged
trapezoidal in the summer heat - the Sun hits them in the afternoon. The
original doors were ratty, but never sagged. The problem is that the door
manufacturer used some kind of plastic based glue (Titebond?) that creeps...

If the joints were tight, there wouldn't be creep at any reasonable temperatures.
Methinks the manufacturer didn't use good construction OR good glue.

Did the rail/stile joints open and show a crack?

On Dec 24, 2016, whit3rd wrote
(in ):

On Saturday, December 24, 2016 at 11:59:38 AM UTC-8, Joseph Gwinn wrote:
On Dec 24, 2016, wrote

I have two heavy wooden doors bought 10 or 15 years ago that quickly sagged
trapezoidal in the summer heat - the Sun hits them in the afternoon. The
original doors were ratty, but never sagged. The problem is that the door
manufacturer used some kind of plastic based glue (Titebond?) that creeps...

If the joints were tight, there wouldn't be creep at any reasonable
temperatures.

The joints appear to be cope and stick,which depends entirely on the glue,
even if the glue line is tight.

Even mortise and tenon will rack unless the tenons fit the sockets perfectly
on all four faces; this is unlikely in US production - too fiddly.


Methinks the manufacturer didn't use good construction OR good glue.

It looks to be the glue, but I did not take the door apart.

While Titebond is a very good general-purpose glue, Im betting it will
creep quickly at 150 F.

"Polyvinyl Acetate (PVA) Glue: Any glue consisting primarily of polyvinyl
acetate polymer. This category includes most traditional white glues and more
advanced yellow aliphatic resin glues. Although PVA glues can vary in
strength, flexibility, water-resistance and sandability, they offer good
performance, cleanup with water and are non-toxic. Because PVA glues tend to
€œcreep€�, or slowly stretch under long-term loads, they are not
recommended for structural applications.€�
..http://www.titebond.com/Libraries/Li...deTB.sflb.ashx


Elsewhere on the Titebond website, it says that their hide glue offers
superior creep resistance. As do epoxy and resorcinol.


Did the rail/stile joints open and show a crack?

Yes. The cracks are tapered exactly as one would expect if the jamb side
stile dropped down, but stayed parallel to the hinge side stile. The
turnbuckles prevented further creep.

Joe Gwinn

On Sat, 24 Dec 2016 17:45:47 -0500, Joseph Gwinn
wrote:

On Dec 24, 2016, whit3rd wrote
(in ):

On Saturday, December 24, 2016 at 11:59:38 AM UTC-8, Joseph Gwinn wrote:
On Dec 24, 2016, wrote

I have two heavy wooden doors bought 10 or 15 years ago that quickly sagged
trapezoidal in the summer heat - the Sun hits them in the afternoon. The
original doors were ratty, but never sagged. The problem is that the door
manufacturer used some kind of plastic based glue (Titebond?) that creeps...

If the joints were tight, there wouldn't be creep at any reasonable
temperatures.

The joints appear to be cope and stick,which depends entirely on the glue,
even if the glue line is tight.

Even mortise and tenon will rack unless the tenons fit the sockets perfectly
on all four faces; this is unlikely in US production - too fiddly.


Methinks the manufacturer didn't use good construction OR good glue.

It looks to be the glue, but I did not take the door apart.

While Titebond is a very good general-purpose glue, I’m betting it will
creep quickly at 150 F.

"Polyvinyl Acetate (PVA) Glue: Any glue consisting primarily of polyvinyl
acetate polymer. This category includes most traditional white glues and more
advanced yellow aliphatic resin glues. Although PVA glues can vary in
strength, flexibility, water-resistance and sandability, they offer good
performance, cleanup with water and are non-toxic. Because PVA glues tend to
“creep”, or slowly stretch under long-term loads, they are not
recommended for structural applications.”
.http://www.titebond.com/Libraries/Li...deTB.sflb.ashx


Elsewhere on the Titebond website, it says that their hide glue offers
superior creep resistance. As do epoxy and resorcinol.


Did the rail/stile joints open and show a crack?

Yes. The cracks are tapered exactly as one would expect if the jamb side
stile dropped down, but stayed parallel to the hinge side stile. The
turnbuckles prevented further creep.

Joe Gwinn
Easy to fix. Drill and pin with good hardwood dowels, the way the old
doors were made - -

On Sat, 24 Dec 2016 17:45:47 -0500
Joseph Gwinn wrote:

Elsewhere on the Titebond website, it says that their hide glue
offers superior creep resistance. As do epoxy and resorcinol.

may be but hide glue not good outdoors unless you have good moisture
barrier finish

On Sat, 24 Dec 2016 14:59:31 -0500
Joseph Gwinn wrote:

Also, what do we mean by €œfails€�?

I have two heavy wooden doors bought 10 or 15 years ago that quickly
sagged trapezoidal in the summer heat - the Sun hits them in the

that is a failure

On Sat, 24 Dec 2016 14:40:28 -0500
wrote:

Depends what kind of "wood glue".

tbii

Hide glue melts at 150 to 180F.
Casein glue should not be heated beyond about 150F

hide glue and casein are the same or no

PVAgoes "plastic" at about 160F

which glues are pva

So the short answer to your question is "yes, many wood glues will
fail well below 200 to 300 degrees F"

more research for me then

In article ,
lid says...

On Sat, 24 Dec 2016 14:40:28 -0500
wrote:

Depends what kind of "wood glue".

tbii

Hide glue melts at 150 to 180F.
Casein glue should not be heated beyond about 150F

hide glue and casein are the same or no

No. Casein is milk-based. Hard to find in the
market now but you can make your own. Formerly
(before WWII) was used for aircraft
construction.

Hide is, well, hide (and hoof and fish and other
things) based, has the advantages that it can be
disassembled with heat and doesn't have to be
completely removed to effect a repair, as long
as the repair is also with hide glue.

PVAgoes "plastic" at about 160F

which glues are pva

Most of the common "wood glues"--Elmer's,
Titebond, etc.

So the short answer to your question is "yes, many wood glues will
fail well below 200 to 300 degrees F"

more research for me then

On 2017-01-15, J. Clarke wrote:

No. Casein is milk-based. Hard to find in the
market now but you can make your own. Formerly
(before WWII) was used for aircraft
construction.

Xcelite tools usta be sold in casein capped sets, as late as the
1980's. You can smell it. Casein plastic smells like sour milk:

http://www.ebay.com/itm/Vintage-Xcelite-PS-120-Nut-Driver-Set-11-Pieces-with-case-/302192976026?hash=item465c1ae09a:g:s-UAAOSwt5hYZZix

***OR***

http://tinyurl.com/hkfp45y


nb

What were the handles made of - same stuff ? If I leave mine in very
hot conditions and moisture - they turn snow white. I put them in my
RF vibration tank with some Green cleaner and they sparkle clean later.

Martin


On 1/15/2017 9:08 AM, notbob wrote:
On 2017-01-15, J. Clarke wrote:

No. Casein is milk-based. Hard to find in the
market now but you can make your own. Formerly
(before WWII) was used for aircraft
construction.

Xcelite tools usta be sold in casein capped sets, as late as the
1980's. You can smell it. Casein plastic smells like sour milk:

http://www.ebay.com/itm/Vintage-Xcelite-PS-120-Nut-Driver-Set-11-Pieces-with-case-/302192976026?hash=item465c1ae09a:g:s-UAAOSwt5hYZZix

***OR***

http://tinyurl.com/hkfp45y


nb

On Jan 11, 2017, Electric Comet wrote
(in article ):

On Sat, 24 Dec 2016 14:40:28 -0500
wrote:

Depends what kind of "wood glue".

tbii

Huh?


Hide glue melts at 150 to 180F.
Casein glue should not be heated beyond about 150F

hide glue and casein are the same or no
Different. Only Hide Glue is much used these days.

A special-purpose variant is Fish Glue.

These are for indoor uses only, not being moisture proof.


PVAgoes "plastic" at about 160F

which glues are pva

All the milky white or yellow emulsion types, that resemble and often smell
like Elmers Glue.


So the short answer to your question is "yes, many wood glues will
fail well below 200 to 300 degrees F"

more research for me then

The research is simple - the manufacturers data sheet will say what the
operating temperature range is.

If you want to cut to the chase, use only glues intended for fabricating
wooden boats, as these will resist both temperature and moisture, and are
strong and creep-resistant.

In for instance the magazine Wooden Boat, you will find everything necessary.
There are also numerous web sites. These glues can be bought online, and in
West Marine stores.https://www.westmarine.com/

Joe Gwinn

On Sun, 15 Jan 2017 14:04:11 -0500
Joseph Gwinn wrote:

Huh?

titebondii

Different. Only Hide Glue is much used these days.

everybody has a bottle of hide glue around

All the milky white or yellow emulsion types, that resemble and often
smell like Elmers Glue.

i see

If you want to cut to the chase, use only glues intended for
fabricating wooden boats, as these will resist both temperature and
moisture, and are strong and creep-resistant.

thought wood boats were made so that the wood swelled and created
the water proof joint but had to be wet to stay sealed

but maybe that is ancient technique

In for instance the magazine Wooden Boat, you will find everything
necessary. There are also numerous web sites. These glues can be
bought online, and in West Marine stores.https://www.westmarine.com/

westmarine has the highest prices almost always but sometimes there are
deals

glues are not often discounted either

On Jan 17, 2017, Electric Comet wrote
(in article ):

On Sun, 15 Jan 2017 14:04:11 -0500
Joseph Gwinn wrote:

Huh?

titebondii

Different. Only Hide Glue is much used these days.

everybody has a bottle of hide glue around

All the milky white or yellow emulsion types, that resemble and often
smell like Elmers Glue.

i see

Its best the leave the context in above, so people can understand what is
being responded to.


If you want to cut to the chase, use only glues intended for
fabricating wooden boats, as these will resist both temperature and
moisture, and are strong and creep-resistant.

thought wood boats were made so that the wood swelled and created
the water proof joint but had to be wet to stay sealed

but maybe that is ancient technique

Yes. Even in the Viking Age, they caulked the seams with wool saturated with
beeswax. In the Age of Sail, it was oakum (rotten rope) driven in with a
caulking iron and hammer.

More recently, people use Resorcinol or Epoxy. See Wooden Boat.


In for instance the magazine Wooden Boat, you will find everything
necessary. There are also numerous web sites. These glues can be
bought online, and in West Marine stores.https://www.westmarine.com/

westmarine has the highest prices almost always but sometimes there are
deals

glues are not often discounted either

Glue is not a good place to be saving money. Its like a tailor who uses
expensive fabric and cheap thread.

In the other thread, yes the wooden door sagging trapezoidal in the summer
heat is a failure. There are no marks on the door saying who made it, or
Id be lecturing them.

Joe Gwinn

On Tue, 17 Jan 2017 09:59:01 -0800, Electric Comet wrote:


thought wood boats were made so that the wood swelled and created the
water proof joint but had to be wet to stay sealed

but maybe that is ancient technique



Seems to me that one of the crucial features of boats is keeping the
water out! Almost as soon as multi-plank boats began to be built, people
used pitch or resins to seal the joints. Speaking as an amateur boat
builder, you *do not* want your seams expanding and contracting at all,
much less at different rates, depending on whether it rained last night.

Cheers,
Colin