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Water Proof Glue

 
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Hi
Pearl Sutton asked me to post my method for making water proof glue.
Here goes.

I dissolve Styrofoam in an organic solvent.
The two organic solvents I've had the best luck with are - gasoline (the alcohol free kind) and - acetone.
They give a little different appearance after they have dried, but, both are super strong and water proof.
It takes a lot of Styrofoam to make a small amount of glue.
It makes a thick gooey blob that is a bit like squishing silly putty in the joints.
It takes forever to dry. (I literally this morning just took the clamps off the box we built 4 days ago)
It expands while it dries.  So if my joints aren't cut exactly right it will expand to fill in tiny gaps.
I've only used it on wood and have no idea if it works on anything else.

To test it we took a pair of 2 foot 2x4's and over lapped them by 1 foot.  A week later we tested the strength of the glue.  We ended up denting the metal chair we had it on and the boards are still stuck together.
 
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Phil: Thank you SO MUCH for posting this!
I have used a foam and solvent mix to burn designs in my artwork, as the foam makes the solvent stay in place where I want it burned. So beware This IS VERY flammable, and it sticks to things, and can be very dangerous if it is on your skin!!

I'm going to try it as an adhesive, I dumpster dive a lot of Styrofoam that I use for various things.
 
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Have you tried limonene as a solvent?

I read somewhere it is used for recycling styrofoam, I obtained some for my own trials and it does dissolve it quickly.

Limonene is commonly used in store bought "natural" cleaners and degreasers. The 3d printing crowd use it for smoothing and glossing ABS prints. I got mine from amazon, it's commonly available from soap making supply shops.

The smell is less offensive than gasoline or acetone but it costs more.
 
Phil Swindler
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Alley Bate wrote:Have you tried limonene as a solvent?

I read somewhere it is used for recycling styrofoam, I obtained some for my own trials and it does dissolve it quickly.

Limonene is commonly used in store bought "natural" cleaners and degreasers. The 3d printing crowd use it for smoothing and glossing ABS prints. I got mine from amazon, it's commonly available from soap making supply shops.

The smell is less offensive than gasoline or acetone but it costs more.



I have not.  But, if you do I'd like to hear how it went.
I've tried a couple oils and they didn't dissolve the Styrofoam very well at all.
 
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Phil Swindler wrote:
I have not.  But, if you do I'd like to hear how it went.
I've tried a couple oils and they didn't dissolve the Styrofoam very well at all.



Challenge accepted!😃
IMG_20190904_204304.jpg
[Thumbnail for IMG_20190904_204304.jpg]
 
Phil Swindler
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Alley Bate wrote:

Challenge accepted!😃



I'd like to see pictures of how that turned out.
 
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I dissolved 18 grams of white EPS foam packaging  into 51 grams of limonene so far. The mixture is perfectly clear but still a little thin . I'm dissolving a little more foam into it to get it to about the same viscosity as yellow carpenters glue before testing glueup.
 
Phil Swindler
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Alley Bate wrote:I dissolved 18 grams of white EPS foam packaging  into 51 grams of limonene so far. The mixture is perfectly clear but still a little thin . I'm dissolving a little more foam into it to get it to about the same viscosity as yellow carpenters glue before testing glueup.



Cool!
Keep us posted.
 
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Nice thread!
I am following with great interest.
Cheap waterproof glue would go far in making cardboard insulation panels.
 
Pearl Sutton
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Alley Bate wrote:Challenge accepted! :D

I dissolved 18 grams of white EPS foam packaging  into 51 grams of limonene so far. The mixture is perfectly clear but still a little thin . I'm dissolving a little more foam into it to get it to about the same viscosity as yellow carpenters glue before testing glueup.



I told my mom this is what I LOVE about permies, we don't disagree about things, we learn from each other and figure out what works, and how and why!
I'm REALLY interested in this experiment, as I am hyper-reactive to everything (serious health issues) but known to not have problems with limonene, in fact I take therapeutic grade limonene every morning.
 
William Bronson
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I was inspired to look for alternative solvents for styrofoam, in particular ethylene glycol, as it is considered a good carrier for boron from both and boric acid, prime anti-pest and flame retardant chemicals.

This site:
https://www.bangslabs.com/common-solvents-and-non-solvents-polystyrene
suggests it might work,and has other potential solvents and non-solvents listed.
 
Pearl Sutton
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That link mentions Methyl salicylate... menthol! Wintergreen extract... Interesting!
I'll read it better later...
 
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Glued 2 pairs with eps/limonene 20/51, perhaps still a little too thin. Left the squeeze out to see what it looks like cured.

2 pairs with yellow carpenters glue thats past its prime, if it chooches properly it should be stronger than the spruce fibers.
IMG_20190909_161510.jpg
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styro vs wood glueup 1
IMG_20190909_163037.jpg
[Thumbnail for IMG_20190909_163037.jpg]
styro vs wood glueup 2
 
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I've tried the 20 to 51 ratio twice now but both failed to have any real holding power. May be usefull as an alternative to penetrating polyurethane clearcoat rather than a glue at this viscosity.

I'll try significantly thickening the mixture for one more test but I suspect limonene is not an effective alternative to acetone or gasoline for this adhesive.
 
Phil Swindler
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Alley Bate wrote:I've tried the 20 to 51 ratio twice now but both failed to have any real holding power. May be usefull as an alternative to penetrating polyurethane clearcoat rather than a glue at this viscosity.

I'll try significantly thickening the mixture for one more test but I suspect limonene is not an effective alternative to acetone or gasoline for this adhesive.



Gasoline and acetone are the only solvents I've had good luck with.

I had better luck with the alcohol free gas than the 10% ethanol variety.
I haven't tried anything with more alcohol.
 
Pearl Sutton
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Alley Bate: does it dry up hard? Would it make a good clearcoat?

 
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Pearl Sutton wrote:Alley Bate: does it dry up hard? Would it make a good clearcoat?



I'll coat a few things with the thicker mixture. The thinner mixture left a very thin clear coat.
 
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Sorry for the delay, I made some progress on another expirement that held my attention.

A week ago I sanded reglued and clamped with 40 parts styro 50 parts limonene. The pieces came apart very easily today so this is a failure as an adhesive.

As a clearcoat it is somewhat interesting in that it is very clear but it is still dentable with a fingernail.
IMG_20190928_110155.jpg
[Thumbnail for IMG_20190928_110155.jpg]
styro clearcoat
IMG_20190928_110311.jpg
[Thumbnail for IMG_20190928_110311.jpg]
styro clearcoat 2
 
Phil Swindler
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Alley thanks for posting those results.
I now know to only use the llimonene version as a clear coat.
The acetone or gasoline versions still work as a glue if you can wait a week for it to dry.
I've never had a skin reaction while making either version.
I'm guessing you are really sensitive to solvents.
 
William Bronson
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Alley Bate wrote:Sorry for the delay, I made some progress on another expirement that held my attention.

A week ago I sanded reglued and clamped with 40 parts styro 50 parts limonene. The pieces came apart very easily today so this is a failure as an adhesive.

As a clearcoat it is somewhat interesting in that it is very clear but it is still dentable with a fingernail.



I have use for that!
Maybe.
I want to try coating window screen with that stuff.
Should make for  tough greenhouse glazing.
 
Phil Swindler
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William Bronson wrote:

Alley Bate wrote:Sorry for the delay, I made some progress on another expirement that held my attention.

A week ago I sanded reglued and clamped with 40 parts styro 50 parts limonene. The pieces came apart very easily today so this is a failure as an adhesive.

As a clearcoat it is somewhat interesting in that it is very clear but it is still dentable with a fingernail.



I have use for that!
Maybe.
I want to try coating window screen with that stuff.
Should make for  tough greenhouse glazing.



Sounds like a good experiment.
You never know till you try.
Can you let us know either way it goes?
 
Pearl Sutton
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Hello Alley! I laughed at seeing my name on your experiment! Looks like some interesting options to work with here. This is a fascinating thread, thanks for starting it Phil! I'll be using both the glue and the clearcoat I suspect. I will fairly soon have an excess of styrofoam cut scraps to abuse.
 
Phil Swindler
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Pearl, Alley, & William

You got my mind churning - thank you.

I have a project I've been thinking about for awhile now.  
You guys made me realize how I might be able to do it.

I want to make cheap copies of some manufactured plastic parts.
I can use my homemade rubber to cast molds.
Then make a wad of the styrofoam/gasoline goo to fill the mold.
It expands as it dries so it should press itself into the details of the mold.
After a couple weeks of drying I should be able to pry the part out of the mold.
This will take some testing and experimentation to see how well it reproduces the part.
The strength of the finished part is another question to be answered.
Thanks for giving me something to think about.
 
William Bronson
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I'm still thinking about this thread!
I've not tried the glycol, too many fires in the iron, but I 'very done some reading on about this kind of recycling.
The Limonene "never" drys, but is less noxious, the other solvents will dry relatively quickly, but are quite noxious.
I'm now wonder about dissolving Styrofoam in a drying oil like linseed.
I know modern boiled linseed is apt to have added toxins, but it's an option that could balance drying time and toxicity.
I think it might need some heat to initially dissolve the Styrofoam, which would be a good thing.

I was given a deep fryer, which has some temperature control.
I think I will dedicate it to oil/plastic experiments.
There are a lot of home brew plastics recycling methods out there,  but I want a way to make transparent  or at least translucent sheets of the stuff.
 
Phil Swindler
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William Bronson wrote:I'm still thinking about this thread!
I've not tried the glycol, too many fires in the iron, but I 'very done some reading on about this kind of recycling.
The Limonene "never" drys, but is less noxious, the other solvents will dry relatively quickly, but are quite noxious.
I'm now wonder about dissolving Styrofoam in a drying oil like linseed.
I know modern boiled linseed is apt to have added toxins, but it's an option that could balance drying time and toxicity.
I think it might need some heat to initially dissolve the Styrofoam, which would be a good thing.

I was given a deep fryer, which has some temperature control.
I think I will dedicate it to oil/plastic experiments.
There are a lot of home brew plastics recycling methods out there,  but I want a way to make transparent  or at least translucent sheets of the stuff.



2 thoughts here.
First - have stuff in the fryer before you turn it on, much lower chances of a flash fire.
Second - I would do those experiments outside, preferably over concrete or gravel.  Sounds like a good way to burn a house down.  Plus, if you catch styrofoam on fire, the fumes are really nasty.
 
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well, boys, I put a handle on an axe, i chopped the handle, fix it into the axe, but I put a coating of styrofoam gasoline glue mixed with fine sand on the handle and the interior of the axe, then I put a iron piece in yhe handle to dilate ... it took a week to dry but, boy, it is concrete now, absolutely never that handle will get out of the axe
 
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I'm curious if a layer of this will work in coating a flat roof to be water proof, anyone use it outdoors and know it's performance in longevity under uv and weather conditions? I'm in florida so no snow.
 
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matt bringle wrote:well, boys, I put a handle on an axe, i chopped the handle, fix it into the axe, but I put a coating of styrofoam gasoline glue mixed with fine sand on the handle and the interior of the axe, then I put a iron piece in yhe handle to dilate ... it took a week to dry but, boy, it is concrete now, absolutely never that handle will get out of the axe


Nice! I hope you'll report back on how it holds up over time.
 
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Dissolved styrofoam doesn't sound particularly healthy or environmentally friendly. I guess you people know what you're doing:)  You can paint styrofoam boxes with bondcrete and glue calico to it- wet the calico out and let it dry. We used to call it poor mans fibreglass. I used it to make a seat for an old boat I was given years ago. It was seat, cooler and floatation all in one. A few years ago the government here introduced a type of petrol (gasoline) into some remote communities where petrol sniffing was a problem. The new fuel didn't get them high. Took the users about a week of experimenting to find that dissolving styrofoam in it made the fuel into a cheap drug again. Makes me want to throw up just thinking about it :)
 
Douglas Alpenstock
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Jay Wright wrote:Dissolved styrofoam doesn't sound particularly healthy or environmentally friendly.  


Maybe so -- but it's an interesting free glue made with found/waste materials available everywhere. Sort of "everyman's glue" for better or worse. When I look at the wall of adhesives at Home Depot I wonder if they are much better.

i also have to confess -- some people might be impressed by the general "badass" of dissolving scrap styrofoam in stale gas, adding clove powder, and gluing sh*t together without blowing yourself up.
 
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There has to be some risk to make it worth doing. My cousins Murray and Steve used to make nitro glycerine under their parents house in Sydney One of the best glues is granulated hide glue made from rabbit skins- totally non toxic, doesn't stink, super easy to use but not waterproof. I used to use it for sinew backing flat bows. Artists sometimes use it as sizing on canvas- it's become pretty expensive though.
I asked a feller in a hardware store once for the strongest wood glue he had- handed me a powder! Add water, mixes to become an unimpressive looking white glue, but it was strong. I use titebond 111 and epoxy these days. My little double ender lapstrake sail/ oar boat is held together mostly with glue- I'd prefer it didn't let go
 
Douglas Alpenstock
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I have a jug of Titebond III to repair some old guitars in our long dark winters. I haven't tested it, but given its reputation I will assume that if it fails it's my sketchy skills and not the glue. Unlike gorilla glue, with TB you can steam out your mistake and try again.
 
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It's good stuff Douglas. I bought a four litre bottle of it when I built the boat- still have quite a bit left. I decant it into a small squeezie plastic tomato sauce bottle and keep the rest in a cupboard out of the light. It cost me nearly eighty dollars so I treat it kindly
 
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Jay Wright wrote:It's good stuff Douglas. I bought a four litre bottle of it when I built the boat- still have quite a bit left. I decant it into a small squeezie plastic tomato sauce bottle and keep the rest in a cupboard out of the light. It cost me nearly eighty dollars so I treat it kindly



And speaking of long dark winters- It's December the wunth here- first day of summer. We've had three inches of rain over the past three days. Today it's ninety something degrees, close to a hundred percent humidity and the flies are absolutely horrendous!!! They get in your nose, behind your glasses. I walk around beating myself and the air around me with a switch off a wattle tree and practicing swearing with my mouth closed.
 
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Well, Jay, the bugs are out to get you. Been there.

Here's a little sympathy from your Canadian cousins. The Blackfly Song:
 
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LOL. Thanks Douglas. We'd just  finished a lovely baked Sunday family lunch at home. Dad said That was Yum! He looked over at my mothers plate and said You gonna eat that bit? Mum said Nope. Dad said Can I have it? Go ahead. Dad ate it and said Why didn't you want it? And Mum said Because it was a blowfly.  
 
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