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How to store CA glue almost indefinately on your work bench

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Forum topic by Planeman40 posted 05-18-2016 03:16 PM 2263 views 3 times favorited 22 replies Add to Favorites Watch
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Planeman40

805 posts in 2228 days


05-18-2016 03:16 PM

Topic tags/keywords: ca cyanoacrylate glue

As a long time user of CA (cyanoacrylic) glue I have developed some methods of use and storage that I want to pass along. The stuff is expensive as glues go and constantly throwing out old hard glue and going to the hardware store for more is a pain. So here is the method of storage to combat that..

Forget the refrigerator storage. It really doesn’t do much good. The catalyst that sets off CA glue is MOISTURE. Keep moisture out of CA and it will last sitting on your bench for years. To do this, I use a large mouth glass jar with a good top that was made to hold liquids. I put the glue in the jar with a package of silica gel to absorb any moisture within the closed jar. Silica gel is what is known as a desiccant which absorbs atmospheric moisture and holds it. Just Google “silica gel” and you can buy it very cheap online in various types of containers. I use an aluminum container that has a spot on the side that changes color when the silica gel is saturated. No need to buy more, just put the container in an oven at a temperature slightly above 212 degrees (F) to drive out the moisture and you are set to go again. After using your CA glue just put it in the jar with the silica gel and screw the cap on tight. I have had large bottles of CA sit on my bench for years like this.

Another tip.

Large bottles of CA tend to have a rather large hole in the applicator end. If you want more control over applying thin CA, get your doctor or pharmacist to give you the needle from a hypodermic syringe. these needles have a pop-off base that plugs onto the CA bottle perfectly. I use a fine cut-off disk in a Dremel tool to trim off the sharp point. Be aware that there are many diameters of needles so pick one that suits you. Yes, the needle will occasionally clog with glue. Simply hold the needle over a butane cigarette lighter flame for about one second and the needle unclogs immediately.

Planeman

-- Always remember: It is a mathematical certainty that half the people in this country are below average in intelligence!


22 replies so far

View Mauricio's profile

Mauricio

7115 posts in 2619 days


#1 posted 05-18-2016 03:32 PM

Great info Planeman, Thank!

-- Mauricio - Woodstock, GA - "Confusion is the Womb of Learning, with utter conviction being it's Tomb" Prof. T.O. Nitsch

View BurlyBob's profile

BurlyBob

3695 posts in 1733 days


#2 posted 05-18-2016 03:36 PM

Thanks for this. I’m wondering if the system can be used with Gorilla glue? I might give it a go.

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Planeman40

805 posts in 2228 days


#3 posted 05-18-2016 05:25 PM

Don’t know about Gorilla Glue. I tried it once and didn’t like the foaming up. Never used it again.

Planeman

-- Always remember: It is a mathematical certainty that half the people in this country are below average in intelligence!

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wncguy

327 posts in 1780 days


#4 posted 05-18-2016 06:03 PM

Planeman – I was wondering that if moisture is the thing that hardens the CA glue, would putting water in a mist spray bottle act like a “kicker”/activator to instantly set the glue instead of using the store bought stuff? I have bottles of the activator, but nozzles seem to clog up.
Thanks!

-- Any man can be a father, but it takes someone special to be a Dad

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Planeman40

805 posts in 2228 days


#5 posted 05-18-2016 07:30 PM



Planeman – I was wondering that if moisture is the thing that hardens the CA glue, would putting water in a mist spray bottle act like a “kicker”/activator to instantly set the glue instead of using the store bought stuff? I have bottles of the activator, but nozzles seem to clog up.
Thanks!

- wncguy

Interesting question. From my experience it doesn’t take much moisture to begin the chemical reaction. When I have glued together broken china, CA takes a long time to harden (absolutely no moisture but what is in the surrounding air). When CA is used on wood it hardens quickly (10 to 12 % moisture in dry wood). So I would think when trying to CA dry non porous surfaces like china or metal a very fine mist of water might help. Worthy of a test.

I don’t like to use a “kicker”/activator” as I find the glue bond seems to suffer. My experience with kickers hasn’t been very good.

Planeman

-- Always remember: It is a mathematical certainty that half the people in this country are below average in intelligence!

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wncguy

327 posts in 1780 days


#6 posted 05-19-2016 06:53 PM

Appreciate the feedback… I will put some water in a spray bottle then put CA glue on a couple of wood pieces, give it a mist & see if it gives a “quick” bond similar to a kicker.
Thanks again.

-- Any man can be a father, but it takes someone special to be a Dad

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MrUnix

4245 posts in 1666 days


#7 posted 05-19-2016 07:03 PM

From Wikipedia:

In general, cyanoacrylate is an acrylic resin that rapidly polymerises in the presence of water (specifically hydroxide ions), forming long, strong chains, joining the bonded surfaces together. Because the presence of moisture causes the glue to set, exposure to normal levels of humidity in the air causes a thin skin to start to form within seconds, which very greatly slows the reaction. Because of this cyanoacrylate is applied thinly, to ensure that the reaction proceeds rapidly for bonding.[citation needed]

The reaction with moisture can cause a container of glue which has been opened and resealed to become unusable more quickly than if never opened. To minimise this reduction in shelf life cyanoacrylate, once opened, can be stored in an airtight container with a package of silica gel desiccant. Another technique is to insert a hypodermic needle into the opening of a tube. After using the glue, residual glue soon clogs the needle, keeping moisture out. The clog is removed by heating the needle (e.g. with a lighter) before use.[citation needed]. The polymerisation is also temperature-dependant: storage at zero degrees or below stops it, so keeping it in the freezer is also effective.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View Aj2's profile (online now)

Aj2

693 posts in 1265 days


#8 posted 05-19-2016 07:15 PM

You put the glue in the Jar with a silicon gel pack.Do mean the glue bottle or your empty the plastic glue squizze thing into the container?
Sounds like something I wouldn’t mind trying but my light bulb is dim today.

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Planeman40

805 posts in 2228 days


#9 posted 05-19-2016 07:54 PM

Aj2 – the glue bottle goes in the jar. I have my dim days too.

Planeman

-- Always remember: It is a mathematical certainty that half the people in this country are below average in intelligence!

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Aj2

693 posts in 1265 days


#10 posted 05-19-2016 08:19 PM

Got it thanks.

View Rdale's profile

Rdale

5 posts in 754 days


#11 posted 11-05-2016 12:29 PM

Great tip! Looking for the silica gel pad now!

-- Better Late Than Never... But, I'm Getting There!

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Planeman40

805 posts in 2228 days


#12 posted 11-05-2016 12:48 PM

I wish this website had a forum for ‘Building Tips”. I tried to start a thread like that but it quickly fizzled out due to lack of interest. After more than 60 years of building things I have some building tips well worth knowing and would love to share. I’m sure others have them too. We need a way to note these on this website where they can be easily seen and referenced.

-- Always remember: It is a mathematical certainty that half the people in this country are below average in intelligence!

View Rick M's profile

Rick M

7934 posts in 1847 days


#13 posted 11-05-2016 05:28 PM

I think there would be interest if there were a way to catalog and organize tips so that people could find and read specific ones when they would be useful. Personally I can never remember them all.

-- http://thewoodknack.blogspot.com/

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Planeman40

805 posts in 2228 days


#14 posted 11-05-2016 05:34 PM

That already exists with the search function and the key words to list.

-- Always remember: It is a mathematical certainty that half the people in this country are below average in intelligence!

View therealSteveN's profile

therealSteveN

21 posts in 41 days


#15 posted 11-05-2016 05:50 PM

get your doctor or pharmacist to give you the needle from a hypodermic syringe. these needles have a pop-off base that plugs onto the CA bottle perfectly. I use a fine cut-off disk in a Dremel tool to trim off the sharp point. Be aware that there are many diameters of needles so pick one that suits you.

Planeman

- Planeman40

Probably in the newer age of heroin addiction getting a hypodermic needle from your Doc or Pharmacist is probably not going to happen, unless you know them personally, and they know you do woodworking. If you do find someone willing to grab you a needle you want an 18 gauge, anything smaller will clog, larger you will still have your hardening problem.

I’m going with 3, yes 3 zip lock FREEZER bags. One inside the other, zipped, and squeeze all the air you can out of it, put it in the next bag, do same, and once again. I’ll also suggest you have a climate controlled shop. If yours freezes, and gets hot in the seasons keeping it somewhere stable inside the house until you need it will go a long way to keeping it from hardening.

No I’m NOT a druggie, laughing here…...........

Free tip….........

If you know an ICU, or ER Nurse, ask them to keep an eye out for an “introducer” they come on central IV access kits, and Lumbar puncture kits, and everything is a throw away. There are several on a tray, most never get touched, much less used, and the unused ones are the prize. You don’t want someones blood or spinal fluid on your fingers, remember they are SICK. All is thrown out, and if the Nurse can vouch for it’s use, it’s a lot better than trying to sneak off with a sharp needle.

You take DAP Plumbers putty and fill the large hole, really fill it. Then you can use it as a tight fitting plug, provided you look at the needle, before cutting the top off your glue, and match the sizes.

Look like these.

-- Think safe, be safe

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