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submitted 1 month ago by xkcdbot@lemmy.world to c/xkcd@lemmy.world

xkcd #3194: 16 Part Epoxy

Title text:

Some surfaces may seem difficult to glue. But if you research the materials, find tables of what adhesives work on them, and prepare your surfaces carefully, you can fail to glue them in a fun NEW way that fills your house with dangerous vapors.

Transcript:

Transcript will show once it’s been added to explainxkcd.com

Source: https://xkcd.com/3194/

explainxkcd for #3194

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[-] FilthyShrooms@lemmy.world 77 points 1 month ago

You also only have 3 minutes to mix them all before it starts curing

[-] Tar_alcaran@sh.itjust.works 71 points 1 month ago

Once applied, it can be gently shifted into any direction that makes alignment worse.

[-] Devial@discuss.online 10 points 1 month ago

Upon which it instantly hardens, preventing you from shifting the parts back into alignment

[-] SocialMediaRefugee@lemmy.world 1 points 4 weeks ago

Now struggle to keep the awkwardly shaped parts in position while it cures. "Gah! It moved!!!"

[-] Peppycito@sh.itjust.works 39 points 1 month ago

This and the boat one tell me that dude just bought a boat and is into some boat repairs.

[-] over_clox@lemmy.world 30 points 1 month ago

They forgot semen, that stuff sticks to everything, especially stuff you don't want it to stick to.. 💦

[-] Assassassin@lemmy.dbzer0.com 20 points 1 month ago

Should have been:

  • Semen
  • Hot water (to cure semen)
[-] SlurpingPus@lemmy.world 24 points 1 month ago

I'm in permanent awe that people manage to glue stuff together in ways that are good enough to be sold and used for years.

[-] SocialMediaRefugee@lemmy.world 1 points 4 weeks ago

The only time I've used epoxy and had it truly last for years was when the handle came off of a cooking pot. It has held strong for 10+ years. I think the key was the plastic handle fit into a pressed metal fitting and the combination of that stabilization and the glue worked well.

[-] Bubs@lemmy.zip 12 points 1 month ago

From explain xkcd:

Polyethylvinylesteracetate

This appears to be a reference to Poly (ethylene-vinyl acetate), some formulations of which can be used as the adhesive in hot-glue guns. Vinyl acetate is an ester, so the inclusion of that term is redundant. The cadence of the constructed word may also be a reference to the television episode Lucy Does a TV Commercial and its memorable product "Vitameatavegamin". It also resembles the kind of thing often seen in ingredients lists for common household products such as soaps and cleaners, which are fairly meaningless to the average person buying them.

2-Polyethylvinylesteracetate

This sounds almost exactly the same as the above item, but a name with a "2-" prefix generally indicates that the initial bit of the name is a functional group attached to the second position along a chemical chain (often being the carbon-carbon 'spine' of a molecule, in large-molecule organic chemistry), rather than attached to its end. Because the molecule name is (possibly deliberately) malformed, it's hard to tell what is supposed to be attached to the second carbon of what subunit.

[-] untorquer@lemmy.world 1 points 4 weeks ago

My first thought without looking anything up was that it was resin and hardener already mixed - cured epoxy.

[-] TDCN@feddit.dk 12 points 1 month ago

One of the ingredients is best stored cold in the fridge and another is best stored at room temperature.

[-] SocialMediaRefugee@lemmy.world 1 points 4 weeks ago

I keep superglue in the fridge. It really helps it last longer.

[-] Alexstarfire@lemmy.world 7 points 1 month ago* (last edited 1 month ago)

#16 must be in every super glue I use. Best use has been to remove the outer layer of my fingers.

[-] SocialMediaRefugee@lemmy.world 1 points 4 weeks ago

FYI, you can remove it with nail polish remover (acetone).

It reacts with water so the moisture in your skin makes it set immediately.

[-] SocialMediaRefugee@lemmy.world 5 points 4 weeks ago

"Bonds to everything but what you are working with." Pretty much my experience.

[-] Tuuktuuk@piefed.europe.pub 4 points 1 month ago

Isn't this what Lembit Funk was telling about when teaching us about that archaic musical instrument?

[-] Amuletta@lemmy.ca 3 points 4 weeks ago

This is only too true.

[-] zr0@lemmy.dbzer0.com 2 points 1 month ago

Oh lol, someone got really frustrated with glue and I understand it. It is hard to find the right glue. Time to invent a machine mixing the glue based on the properties you need

[-] Dupelet@piefed.social 2 points 1 month ago

Somebody's been gluing (the wrong) stuff together...

[-] ButteryMonkey@piefed.social 1 points 1 month ago* (last edited 1 month ago)

Would it be possible to make powdered magnets work..? Not as an adhesive, probably, although that would be pretty neat actually..

Like I know magnets are magnets because of the alignment of many many atoms, but say you powdered the magnets, somehow kept them from clumping up (because of course they would) and then applied a low-level magnetic field (or something a magnet would stick to, maybe?) to whatever you were setting the powder in, could you hypothetically make a magnetic table or something with it?

[-] captainlezbian@lemmy.world 2 points 4 weeks ago

So magnetic tape (tape cassettes, VHS/Betamax, 8 tracks, etc) is powdered iron (II) oxide and works by being magnetized to write data to it. So yeah. Quick search revealed it's totally a thing and you can buy it, primarily in industrial quantities.

As for a magnetic table, you don't even need it powdered, hell you could probably just get two stainless steel sheets, four stainless steel strips, a matrix with holes in the proper positions, and a bunch of high powered small permanent magnets and make your own magnetic table without it being that difficult to make

this post was submitted on 14 Jan 2026
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