wrote in message
oups.com...

Geoff Sanders wrote:
If cyanoacrylic glue reacts to moisture,

It does not cure with moisture. It is an anaerobic glue.

Dan

Dan
Sorry, it does cure in the presence of moisture; from Henkel-Loctite's MSDS
for cyanoacrylate glues:
Polymerized by contact with water, alcohols,
amines, alkalies.
Loctite thread locking agents such as 222, 241, 270 are anaerobic adhesives
however.
Martin
..--
martindot herewhybrowat herentlworlddot herecom

You are right. I looked it up on the Three Bond web site and it is OH
that cures it. I was going by what I remembered for Eastman 910 data
sheets about fifty years ago. And obviously I remembered wrong. Funny
though that you can put a drop on something and nothing happens until
you put something else against it and squeeze. I guess it is because
it has little surface area when it is a drop on a substrate. And when
you squeeze it with another piece, you spread it out so it can contact
the moisture on the surfaces of both pieces.

Dan


Martin Whybrow wrote:

Dan
Sorry, it does cure in the presence of moisture; from Henkel-Loctite's MSDS
for cyanoacrylate glues:
Polymerized by contact with water, alcohols,
amines, alkalies.
Loctite thread locking agents such as 222, 241, 270 are anaerobic adhesives
however.
Martin
.--
martindot herewhybrowat herentlworlddot herecom

for cyanoacrylate glues:
Polymerized by contact with water, alcohols,
amines, alkalies.

When I build RC model airplanes we use to use super glue and we
would accelerate it with baking soda. Put some baking soda
in a rubber bulb and spray it on the joint. It would cure imediately
(with smoke) and the baking soda would make a fillet too.

"Too_Many_Tools" writes:
The contact cement I have seems to solidify even when there is solvent
still in the can...very curious since I thought contact cement was a
solvent evaporation process.

I bought a can (about 250ml) of Contact cement about 15 years ago. Every
12 months or so I prise open the lid and use some for a few jobs I've
saved up, then after use carefully tap the lid all around the edge to make
sure it seals well. The cement is as liquid as it was when purchased and
there is no solidified cement in the can or on its sides. If only all
adhesives were so reliable and could be packaged so effectively!
--
John Savage (my news address is not valid for email)

In article
,
says...

"Too_Many_Tools" writes:
The contact cement I have seems to solidify even when there is solvent
still in the can...very curious since I thought contact cement was a
solvent evaporation process.

I bought a can (about 250ml) of Contact cement about 15 years ago. Every
12 months or so I prise open the lid and use some for a few jobs I've
saved up, then after use carefully tap the lid all around the edge to make
sure it seals well. The cement is as liquid as it was when purchased and
there is no solidified cement in the can or on its sides. If only all
adhesives were so reliable and could be packaged so effectively!


Yeah-but, the "super" glue and airplane-model glue
formulas are much more aggressive.

It is really annoying to go around with this tube
permanently stuck in my nostril.


--
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Antipodean Bucket Farmer wrote:

In article
,
says...

"Too_Many_Tools" writes:
The contact cement I have seems to solidify even when there is solvent
still in the can...very curious since I thought contact cement was a
solvent evaporation process.

I bought a can (about 250ml) of Contact cement about 15 years ago. Every
12 months or so I prise open the lid and use some for a few jobs I've
saved up, then after use carefully tap the lid all around the edge to make
sure it seals well. The cement is as liquid as it was when purchased and
there is no solidified cement in the can or on its sides. If only all
adhesives were so reliable and could be packaged so effectively!


Yeah-but, the "super" glue and airplane-model glue
formulas are much more aggressive.

It is really annoying to go around with this tube
permanently stuck in my nostril.

Be thankful you weren't repairing hemorrhoids.

Just go ahead and sniff those glues to use them up..... then they won't
be left sitting around!

SoCalMike wrote:
Too_Many_Tools wrote:

- Super glue
With super glue, I use it once and when I come back later to use it
again the tube has hardened.

i remember when superglue was expensive. now it can be bought at the 99
cent store.

FWIW, there are 3 different packaging methods for it.

the "original" is in a plastic tube-thingie with a pin/cap to pierce
it.that works ok.

then theres the mini-bottle, which is hit and miss.

mini foil tubes are the worst, they always dry up.


I found that with polyurethane glues the scum which forms on the
surface can't be avoided but if you store the containers inverted then
the scum won't clog up the nozzle. Refrigerating CA thin works well
as I have been refilling the little bottles out of an 8oz bottle that
I bought over three year ago.

Phil AMA609