TIP: Seal your CA, Urethane and Epoxy bottles!

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pturley

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Dec 4, 2018
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Cleveland, Ohio
Many of you may know this one already, but I picked up this trick from years of building model airplanes!

If you dab a bit of Vaseline on the threads of any adhesive bottle after opening it, the glue will last MUCH, MUCH longer...

This is particularly the case with Urethane and Cyanoacrylate glues that cure by hydrolysis (moisture cure!).

It also increases the storage life of epoxies (stays clearer longer, doesn't yellow as quickly!)

Just a quick tip!

Sincerely,
Paul Turley
 
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pturley

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Dec 4, 2018
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The guys at work have more than one 2 oz. bottles of CA with 1.5 oz left that they cannot get open!!!
 
Last edited:

jttheclockman

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Feb 22, 2005
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NJ, USA.
Not following. Aren't these bottles the ones where you clip the top off and you have the snap on cap after you open them?? Why are you unscrewing them again. All my epoxy and CA glues work that way.
 

larryc

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Oct 2, 2009
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Mableton, GA (Near Atlanta)
I have been finishing pens with CA for years and never had a problem with the CA hardening or the bottle clogging. I leave the bottle open and uncapped on a shelf near the lathe. I have had some CA that had hardened before I even opened it that I took back to the store for a refund.
 

Woodchipper

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Mar 15, 2017
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Cleveland, TN
I had one bottle of Titebond CA that I had to use two pairs of pliers to unscrew the cap. Now I clean the tip with acetone each time I use the CA. Problem solved.
 

sbwertz

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May 11, 2010
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Phoenix, AZ
If you give the bottle a sharp rap on the workbench, then a quick squeeze, it will blow any residual CA out of the tip and will never clog.
 

JRK

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Feb 25, 2019
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Location
Bridgeton, Missouri
Many of you may know this one already, but I picked up this trick from years of building model airplanes!

If you dab a bit of Vaseline on the threads of any adhesive bottle after opening it, the glue will last MUCH, MUCH longer...

This is particularly the case with Urethane and Cyanoacrylate glues that cure by hydrolysis (moisture cure!).

It also increases the storage life of epoxies (stays clearer longer, doesn't yellow as quickly!)

Just a quick tip!

Sincerely,
Paul Turley
I used make RC Planes. Used CA and Epoxy. Glued my hand to a 6' wing once with CA. Lucking a tube of CA de-bonder was near by. lol
 

penicillin

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Feb 27, 2019
Messages
100
Okay, someone please help me understand this tip.

I use StickFast CA glue, which comes in small clear plastic bottles. The cap has threads that screw onto the bottle, and has a long tip with sealed end. The sealed end is pierced with a pin to open the bottle and use the tip to dispense glue. A long, cone-shaped cover snaps over the cap. In normal use, I never unscrew the cap. I remove the cover and squeeze the bottle.

Are you saying that I should unscrew the cap (never done under normal use) and apply Vaseline (petroleum jelly) around those threads, use the glue normally, and somehow the glue will "last MUCH longer" because of the Vaseline?

If not, please give more details of where and how the Vaseline is applied, so I can understand better.
 

jttheclockman

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Feb 22, 2005
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NJ, USA.
Okay, someone please help me understand this tip.

I use StickFast CA glue, which comes in small clear plastic bottles. The cap has threads that screw onto the bottle, and has a long tip with sealed end. The sealed end is pierced with a pin to open the bottle and use the tip to dispense glue. A long, cone-shaped cover snaps over the cap. In normal use, I never unscrew the cap. I remove the cover and squeeze the bottle.

Are you saying that I should unscrew the cap (never done under normal use) and apply Vaseline (petroleum jelly) around those threads, use the glue normally, and somehow the glue will "last MUCH longer" because of the Vaseline?

If not, please give more details of where and how the Vaseline is applied, so I can understand better.

The OP never did give any update on his idea but I think he was saying if you unscrewed the cap and put vasoline on the threads it will prevent them from clogging and at some later date you should be able to unscrew it without problem. You do not want to put anything on the tip of the glue nozzle because it will contaminate the glue. I see no value in the idea but to each their own. If the glue gets clogged, soak it in a container of acetone and it will melt it away. Follow the ideas other gave about tapping the side of the bottle and other things given here. :smile::smile:
 

More4dan

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Mar 17, 2016
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Location
Katy, TX
Oxygen and moisture can degrade many chemicals and I’m guessing the post was about keeping air and water out of the glues and resins mentioned.

Temperature makes a difference too for CA and Cactus Juice. I keep both in the fridge to prolong shelf life.


Sent from my iPhone using Penturners.org mobile app
 

lyonsacc

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Aug 31, 2012
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Location
Cincinnati, OH
Stickfast, EZ-bond, and probably a few other brands of CA have a "snap" type of cap. Mercury, Gluboost, and possibly a few other brands have a cap that screws on/off.

Can't really tell from the OP, but the threads on the Mercury/Gluboost caps might be what he is referring to.



Okay, someone please help me understand this tip.

I use StickFast CA glue, which comes in small clear plastic bottles. The cap has threads that screw onto the bottle, and has a long tip with sealed end. The sealed end is pierced with a pin to open the bottle and use the tip to dispense glue. A long, cone-shaped cover snaps over the cap. In normal use, I never unscrew the cap. I remove the cover and squeeze the bottle.

Are you saying that I should unscrew the cap (never done under normal use) and apply Vaseline (petroleum jelly) around those threads, use the glue normally, and somehow the glue will "last MUCH longer" because of the Vaseline?

If not, please give more details of where and how the Vaseline is applied, so I can understand better.

The OP never did give any update on his idea but I think he was saying if you unscrewed the cap and put vasoline on the threads it will prevent them from clogging and at some later date you should be able to unscrew it without problem. You do not want to put anything on the tip of the glue nozzle because it will contaminate the glue. I see no value in the idea but to each their own. If the glue gets clogged, soak it in a container of acetone and it will melt it away. Follow the ideas other gave about tapping the side of the bottle and other things given here. :smile::smile:
 

penicillin

Active Member
Joined
Feb 27, 2019
Messages
100
Thanks for the helpful answers above. I thought that maybe the OP was using vaseline to seal the bottle from air leaking around the threads. Now that I understand more about the screw covers for some CA glues, it makes more sense.

I am using a tiny bottle of Gorrila glue for the brass inserts in pens. It has a screw on lid similar to what you describe. I try to squeeze the air out of the bottle, then screw the lid. Maybe vaseline would help there, but I doubt it makes a real difference.
 

CaptainJane

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Sep 25, 2014
Messages
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Location
Bayou Vista, Texas
I live in a very humid area near Galveston TX. The moisture in the air reacts with the little bit of CA on the tip, and hardens. Often, it will glue the cap to the spout, and almost always, the big cap gets enough CA into the threads to form a thick bond.

Those lucky guys who have never had 1-1/2 oz of a 2 oz bottle harden are lucky.
 

sbwertz

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May 11, 2010
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Location
Phoenix, AZ
I have been finishing pens with CA for years and never had a problem with the CA hardening or the bottle clogging. I leave the bottle open and uncapped on a shelf near the lathe. I have had some CA that had hardened before I even opened it that I took back to the store for a refund.

That works here in the dry climate of Phoenix...but not during monsoon. I cap them up during the monsoon months when the humidity is up. It will draw moisture from the air and harden.
 

pturley

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Joined
Dec 4, 2018
Messages
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Location
Cleveland, Ohio
Both CA and Urethane glues react with moisture in the air. Epoxies age and yellow as they absorb moisture from the air.

The Vaseline acts as a moisture barrier. Anywhere you can seal a tube of glue (but keep it away from the dispensing tip) will help prolong the life of the contents.

As sbwertz indicated, if you live in a dry climate, it is much less of a problem.
 
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