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Television is 100 years old today

https://diamondgeezer.blogspot.com/2026/01/tv100.html
381•qassiov•8h ago•129 comments

People who know the formula for WD-40

https://www.wsj.com/business/the-secret-society-of-people-who-know-the-formula-for-wd-40-e9c0ff54
42•fortran77•1h ago•68 comments

The Hidden Engineering of Runways

https://practical.engineering/blog/2026/1/20/the-hidden-engineering-of-runways
92•crescit_eundo•6d ago•21 comments

ChatGPT Containers can now run bash, pip/npm install packages and download files

https://simonwillison.net/2026/Jan/26/chatgpt-containers/
74•simonw•3h ago•58 comments

State of the Windows: What is going on with Windows 11?

https://ntdotdev.wordpress.com/2026/01/25/state-of-the-windows-what-is-going-on-with-windows-11/
59•xd1936•42m ago•46 comments

JuiceSSH – Give me my pro features back

https://nproject.io/blog/juicessh-give-me-back-my-pro-features/
169•jandeboevrie•4h ago•66 comments

There is an AI code review bubble

https://www.greptile.com/blog/ai-code-review-bubble
113•dakshgupta•7h ago•86 comments

RIP Low-Code 2014-2025

https://www.zackliscio.com/posts/rip-low-code-2014-2025/
77•zackliscio•6h ago•43 comments

Dithering – Part 2: The Ordered Dithering

https://visualrambling.space/dithering-part-2/
80•ChrisArchitect•3h ago•7 comments

Show HN: TetrisBench – Gemini Flash reaches 66% win rate on Tetris against Opus

https://tetrisbench.com/tetrisbench/
53•ykhli•4h ago•24 comments

MapLibre Tile: a modern and efficient vector tile format

https://maplibre.org/news/2026-01-23-mlt-release/
381•todsacerdoti•12h ago•77 comments

Apple introduces new AirTag with longer range and improved findability

https://www.apple.com/newsroom/2026/01/apple-introduces-new-airtag-with-expanded-range-and-improv...
186•meetpateltech•8h ago•272 comments

Fedora Asahi Remix is now working on Apple M3

https://bsky.app/profile/did:plc:okydh7e54e2nok65kjxdklvd/post/3mdd55paffk2o
363•todsacerdoti•4h ago•129 comments

The Adolescence of Technology

https://www.darioamodei.com/essay/the-adolescence-of-technology
100•jasondavies•5h ago•65 comments

Toy implementations of the 30 foundational papers recommended by Ilya Sutskever

https://github.com/pageman/sutskever-30-implementations
3•auraham•22m ago•0 comments

France Aiming to Replace Zoom, Google Meet, Microsoft Teams, etc.

https://twitter.com/lellouchenico/status/2015775970330882319
416•bwb•6h ago•364 comments

Qwen3-Max-Thinking

https://qwen.ai/blog?id=qwen3-max-thinking
389•vinhnx•7h ago•343 comments

AI code and software craft

https://alexwennerberg.com/blog/2026-01-25-slop.html
5•alexwennerberg•4h ago•0 comments

Windows 11's Patch Tuesday nightmare gets worse

https://www.windowscentral.com/microsoft/windows-11/windows-11s-botched-patch-tuesday-update-nigh...
86•01-_-•7h ago•83 comments

Porting 100k lines from TypeScript to Rust using Claude Code in a month

https://blog.vjeux.com/2026/analysis/porting-100k-lines-from-typescript-to-rust-using-claude-code...
127•ibobev•8h ago•88 comments

Show HN: Floating-point drift between Apple M1 and H100 is real

5•luxiedge•2d ago•4 comments

After two years of vibecoding, I'm back to writing by hand

https://atmoio.substack.com/p/after-two-years-of-vibecoding-im
577•mobitar•9h ago•444 comments

Not all Chess960 positions are equally complex

https://arxiv.org/abs/2512.14319
43•MaysonL•3d ago•17 comments

Show HN: Ourguide – OS wide task guidance system that shows you where to click

https://ourguide.ai
16•eshaangulati•4h ago•4 comments

Google AI Overviews cite YouTube more than any medical site for health queries

https://www.theguardian.com/technology/2026/jan/24/google-ai-overviews-youtube-medical-citations-...
331•bookofjoe•8h ago•179 comments

San Francisco Graffiti

https://walzr.com/sf-graffiti
128•walz•12h ago•129 comments

Show HN: SF Microclimates

https://github.com/solo-founders/sf-microclimates
16•weisser•20h ago•25 comments

Things I've learned in my 10 years as an engineering manager

https://www.jampa.dev/p/lessons-learned-after-10-years-as
512•jampa•5d ago•132 comments

OpenFlexure Microscope

https://openflexure.org/projects/microscope/
29•o4c•5d ago•4 comments

Google Books removed all search functions for any books with previews

https://old.reddit.com/r/google/comments/1qn1hk1/google_has_seemingly_entirely_removed_search/
158•adamnemecek•4h ago•54 comments
Open in hackernews

People who know the formula for WD-40

https://www.wsj.com/business/the-secret-society-of-people-who-know-the-formula-for-wd-40-e9c0ff54
41•fortran77•1h ago
Gift link: https://www.wsj.com/business/the-secret-society-of-people-wh...

Comments

hurricanepootis•1h ago
Couldn't WD-40's formula be reverse engineered using analytical chemical techniques? GC-MS, NMR, etc.
542458•1h ago
Related, somebody recently did this for Coke. There's a video on YouTube (I'd link it but my anti-procrastination filter is on).

But yes, I strongly suspect a motivated party could use analytical chemistry to work it out.

pogue•1h ago
Ha! ;)
throwawayq3423•54m ago
I imagine the "what's next" is the same for replicating Coke or WD-40, you have a similar product and none of the name recognition or ad spend.

Not worth much.

pogue•1h ago
The guy on YouTube who just recreated the formula of Coca-Cola with HPLC & etc should take a crack at it

Perfectly Replicating Coca Cola (It Took Me A Year) by LabCoatz https://youtu.be/TDkH3EbWTYc

xeonmc•56m ago
Instructions unclear. Taste-tested WD40.
guerrilla•53m ago
It smells so fucking good though, don't you think? You almost want to taste it.
cryptoz•46m ago
The title is clickbait though, he admits near the end it is not in fact a perfect replication. I could feel this of course, long before even starting to watch it. Still, upsetting because otherwise it’s an entertaining video.
pogue•25m ago
The main ingredient he is missing is coca leaf. I used to buy Mate de Coca tea from Peru/Boliva no problem. It's a decocanized coca leaf tea. Shame he didn't hunt around or try harder to get it.
capitainenemo•5m ago
He said his first order of decocanised cocoa leaf was seized at the border. I can see that discouraging trying again, esp when he's trying to make something others could reproduce.

He did find a pretty good substitute for the primary cocoa leaf ingredient though. Also, what he made was virtually indistinguishable in the taste tests. One person said that his tasted closer to the 2L of coke than the can of coke did, which suggests the final bit could just be carbonation level of the soda stream.

Scoundreller•1h ago
Sorta, it’s a mix of mixtures of molecules so you also need to consider the makeup of whatever compound it’s made with (but it’s probably something dumb like kerosene).

Reality is you’d want to make something with similar physical characteristics and call it a day. Kinda like how we don’t bother with hplc on gasoline, you just fill your car with something that meets the specs and get on with life

p0w3n3d•1h ago

  kerosene
Like in Grog
loosescrews•58m ago
To some extent. There are limitations on the technique, including, but not limited to, not determining the relative concentrations and not detecting all components. The WSJ article actually links to an older Wired article about doing gas chromatography and mass spectroscopy on WD-40 and the results: https://www.wired.com/2009/04/st-whatsinside-6/
dylan604•51m ago
Trying to come up with that would result in WD-38, WD-41, etc.

Can't read the paywalled article, but Water Displacement formula 40 seemed to be the best of the formulas for being a lubricant.

daedrdev•49m ago
Knowing all the molecules in it might be only a minor step towards actually making it, especially since some inputs of production might not be present in the final product.
IshKebab•35m ago
It probably wouldn't be that hard. This mystique is mostly marketing. I mean it's not like WD-40 has no competitors on the market. It might not even be the best.
krackers•10m ago
The components are on the MSDS (albeit only the CAS codes not the specific chemical), only the percentages seem to be a trade secret? Basically a light carrier oil mixed with kerosene-esque solvent. I almost feel the secrecy is part of the marketing ploy, since w-40 in particular isn't the "best" tool for any job (there are better standalone degreasers and penetrating lubricants). No one who cares enough about the exact composition would bother using wd-40 in the first place.
CamperBob2•1h ago
It requires a special key, nondisclosure agreements, passage through a bank vault and, typically, an executive title. The drinks don’t flow, members don’t rub elbows with notable people and chefs aren’t filling plates with tasty bites. The only perk is knowing the secrets of the world’s most famous lubricant. And yet, for those in the know, there’s no greater privilege.

In other news, WD-40 is not a lubricant.

nodesocket•1h ago
Agree fundamentally WD-40 is a cleaner, but it does offer some lubricant outcomes.
CamperBob2•1h ago
Yep, there are lubricants listed in the ingredients, but the stuff it actually leaves behind when the volatiles are gone is mostly good at displacing water (as the article points out.) Very little in the way of friction reduction.

It also makes a superb bug killer, especially in combination with a barbecue lighter.

nodesocket•1h ago
Interesting use case. lol. I use it to remove sticker residue from the insufferable companies that use stickers on their products attached with super-glue like adhesive.
pirates•1h ago
Does it work better than something like Goo-Gone?
bigstrat2003•58m ago
I hate that. In particular, there is a special place in hell reserved for businesses which put those stickers on books. It's almost impossible to get some of those stickers off without leaving residue or harming the paper.
542458•1h ago
It is absolutely a lubricant - it is a combination "lubricant, rust preventive, penetrant and moisture displacer". Whether it's the correct or best lubricant for many applications is iffy, but that doesn't mean it isn't a lubricant!
CamperBob2•1h ago
Point being, if you're using it as a lubricant, you're using the wrong stuff. What it leaves behind isn't very useful as a lubricant... unlike, you know, an actual lubricant.
rzzzt•1h ago
WD-40 is now the designation of a whole bunch of products, including chain grease.
Scoundreller•1h ago
My recent trip to the ground was sufficient proof to me that even water is a lubricant.
marcosdumay•49m ago
Depending on where you apply it, it's absolutely a lubricant.
coredev_•1h ago
Is it? Please explain and provide sources. Just because it feels like a lubricant and maybe advertised as a lubricant it might not actually be a lubricant.
preommr•56m ago
> Just because it feels like a lubricant and maybe advertised as a lubricant

Not the parent comment, but sometimes comments are so outrageous it makes me laugh.

Like what else do you even want at that point?

Source that you can put gas in your car? That pop tarts are food? Like yes, it's advertised as food, I can tell it's food, I've eaten it - but where is your source for it being food other than all that?

dec0dedab0de•48m ago
If it reduces friction, it's a lubricant.
b00ty4breakfast•1h ago
From personal experience, I can count on one hand the number of times that wd40 (edit: at least the canonical formulation) has been the best lubricant for a given application.
convolvatron•48m ago
for me its that its not at all long lasting. I guess it's fine as a cleaner, but even light mineral oil hangs around longer.

oh right, it also seems to leave a gummy residue, which is really not great for machine tools

b00ty4breakfast•40m ago
yeah, most of my use-cases for classic wd-40 have always been getting things unstuck rather than long-term lubrication. The lubricating action tends to evaporate with the solvent(s) and leaves, as you've pointed out, the famous gummy residue that is good for keeping moisture out but not at being a lubricant
cucumber3732842•36m ago
Being a recognized household name makes it infinity less likely you'll have someone complaining if you use it in a "nice" setting.

That makes it the "best" for a lot of "anything works" applications.

cortesoft•1h ago
The WD-40 website says that is a myth, and it is a lubricant

https://www.wd40.com/myths-legends-fun-facts/

Myth: WD-40 Multi-Use Product is not really a lubricant.

Fact: While the “W-D” in WD-40 stands for Water Displacement, WD-40 Multi-Use Product is a unique, special blend of lubricants. The product’s formulation also contains anti-corrosion agents and ingredients for penetration, water displacement and soil removal.

rpcope1•49m ago
Yeah and water and gas are maybe a "lubricants" too. It's a pretty shitty lubricant.
cucumber3732842•40m ago
Lubricates well enough for 99% of the homeowner things it gets used for.
CobrastanJorji•48m ago
"WD-40 Multi-Use Product is a...blend of lubricants"

How does the author of that fun facts page know this for sure? I just heard that only executives get to see the ingredient list. Is this fun fact author an executive?

Modified3019•24m ago
Sure, and sand is a lubricant in the right scenario. This of course completely misses the point.

Anyone who actually use wd40 will eventually notice it not only has poor ability to stick around under load, but also likes to oxidize, forming a varnish or horrible goo depending on how thick it was left on. While this doesn’t matter (or is even desirable) for loosening a bolt, it’s a poor choice on tools, hinges, etc.

If long term lubrication is needed, then people should just use an appropriate grease or a non-oxidating* oil meant for staying around and lubricating.

*Plant based oils generally contain high amounts of polyunsaturated fats, which love to oxidize. Great for seasoning cast iron, but bad for other things. The goo/lacquer you get on kitchen pans and around the oven is oxidized fats linking together. There are rare exceptions to plant based oils being a bad idea for lubrication, involving genetic modification to produce mostly monounsaturated fats and further processing, like with alg’s “go juice”.

zzless•59m ago
I am not sure why you are being downvoted but you are absolutely right: it is even in the name (WD stands for 'Water Displacement'). My reaction to this article was a huge: 'why?'. WD-40 is at best mediocre at everything it is used for. Wurth makes much more capable compounds for the came purposes. Their penetrating oil is unmatched. I guess as part of the popular culture, WD-40 has its value but I am not sure its chemical properties are all that unique.
copperx•59m ago
It IS a lubricant, although not a very good one.
PyWoody•48m ago
3-in-1 is the best bang for the buck lubricant. I use it everywhere. Well, not for that, but for everything else.
caminante•46m ago
It's definitely a lubricant.

See their old school ad campaign

> Do you have tight nuts or a rusty tool? [0]

[0] https://thedutchluthier.wordpress.com/2016/09/13/tight-nuts-...

notpushkin•1h ago
> Gift link

I think it’s okay to share the gift link as canonical. It’s the usual practice of sharing articles from LWN here, for example.

parliament32•1h ago
https://archive.ph/kfzIc
Etheryte•1h ago
How to tell you didn't even read the submission you're commenting on.
dwedge•55m ago
It's the same article without the pay wall
treesknees•55m ago
The actual submission link isn’t using the gift link. And “reading” the submission doesn’t reveal the end of the URL with the gift access token.
joshstrange•41m ago
I don't know if that's really fair. It's much more rare for HN link posts to have bodies and this one is a single line of the gift link. Yes, that gift link works today but it's also completely reasonable to post the archive link.
FrustratedMonky•1h ago
Does article go into how it is manufactured without anybody knowing? Some manufacturing engineers somewhere must know.

Unless they have own refining facility, and it is more like a recipe of temperatures/pressures.

dantiberian•1h ago
I'd be very interested to know how they produce it if the formula is so tightly held. At some point people need to be purchasing the ingredients and mixing them together.
nu11ptr•59m ago
Exactly what I was thinking. I mean how can you produce something, esp. in bulk, when the exact ingredients and quantities aren't known? Assuming it is made in a typical factory, the machines would have to be programmed and that would typically mean someone has to know. I wonder if they split the knowledge over several different groups so a group only knows a single piece? Hmm....
fabiensanglard•57m ago
This is how they do it. There was a documentary about coca-cola and they explained that they completely separated the supply pipeline. Operators manipulate unlabelled sources coming from separate parts of the company.
atombender•45m ago
It's a myth that Coca-Cola is a closely held secret, though. Any food flavoring specialist can reconstruct the flavor of Coke almost exactly.

A few years ago I (not a specialist!) made lots of batches of OpenCola, which is based partly on the original Pemberton recipe, and it comes so close that nobody could realistically tell the difference. If anything, it tastes better, because I imagine Coke doesn't use fresh, expensive essential oils (like neroli) for everything.

The tricky piece that nobody else can do is the caffeine derived from coca leaves. Only Coke has the license to do this, and from what I gather, a tiny, tiny bit of the flavour does come from that.

schlauerfox•10m ago
Someone has claimed to have done so and tested it, again, minus the coca leaves. https://www.youtube.com/watch?v=TDkH3EbWTYc
sieep•50m ago
Ive heard from others that this is how defense software engineering goes.

You write code for a certain part/spec that could go on a number of things (missle, airplane, etc). You dont know if your code will be used in a missile or not.

awesome_dude•56m ago
A fairly obvious solution (IMO) would be to have multiple people buying the ingredients, some even buying unused ingredients. That would cover purchasing.

The mixing, again, spreading it out, have factory A mix ingredients x, y, and z, factory B mix ingredients Alpha, Beta, Gamma, and factory C mix factory A and B's mixtures.

Etheryte•55m ago
You could say the same about cryptographic signatures where each party only knows a part of the key, yet those all work fine. You could probably piece together the formula by a sum of some employees and some external suppliers if everyone broke their NDA, but if people keep their word, your factories could just as well see shipments of "Ingredient A" and the worker only knows how much to add to each batch.
mulmen•50m ago
I wonder how much information leaks through something like Material Safety Data Sheets.
supern0va•47m ago
It's possible to separate out these tasks such that no single person or group has every needed piece of the puzzle.

The Carthusian monks who produce Chartreuse (a collection of herbal liqueurs popular for use in cocktails) have been producing it and protecting the secret 130 ingredient recipe for over 400 years successfully. At any given time no more than three of the monks hold the entire recipe, and yet they have a company they have formed to execute most of the production without the secret being leaked.

The designated monks coordinate production and are involved in QC, as well as developing new blends for special releases, but much production is done by paid employees who do not know the complete recipe.

https://en.wikipedia.org/wiki/Chartreuse_(liqueur)

lgleason•56m ago
and yet their revenues are not even 1 billion.
CAP_NET_ADMIN•41m ago
WD-40 is not really that great at anything, people buy the brand name, that's it. The formule being public probably wouldn't change much
OutOfHere•28m ago
It probably contains PFAS too which probably makes it altogether hazardous to spray at all. Also, I suspect that breathing its ambient vapor while spraying it is is bad for the body and brain.

Canola oil works super well in practice without any of these risks.

legitster•5m ago
WD-40 classic does not contain PFAS. Which is not to say you should breath it in.

> Canola oil works super well in practice without any of these risks.

I cannot advise enough against using canola oil for most lubrication purposes. It's biodegradable and will break down (good for some applications) but for the most part oil breaking down is a bad thing if you want to keep something well maintained. It would gum up over time, start reacting chemically with dust or other chemicals, and potentially even cause damage. Especially if you lubricate to prevent rust.

Also, in the context of breaking loose bolts, oil alone doesn't have any capacity to break up or penetrate rust.

joshstrange•26m ago
Maybe I'm just a fuddy-duddy but my eyes about rolled out of my head reading this. The same article could probably be written about multiple companies and it'd be just as uninteresting. It's my understanding that there isn't anything special about WD-40, as in alternatives exist that can work just as well. Now, I think WD-40 is a brand name that can be trusted to work well more often than most alternatives but that is more about process than recipe (I would think).

I've long thought that every restaurant/bakery/etc could publish their full internal cookbooks and not see a drop in sales. People don't buy it because they are incapable (or think they are) of making something, they do it because it's faster, they don't have all the ingredients, they don't have the time, they don't have the skill, the list goes on. I bet I could give the instructions, the equipment, and the ingredients to people and they'd still choose to buy it. Sure, you might lose a tiny bit of sales to "home bakers" [0] but I think it'd be eclipsed by people that saw/read/heard about the cookbook (maybe never even saw it) and that was enough "marketing" to get them in the door.

I've always found "secret knowledge" to be a little silly. A sort of, security through obscurity. Knowing a recipe doesn't make you special, being able to build/run a company around it and make it consistently good does.

[0] I love to cook, I sometimes like making copy-cat recipes. I cannot think of a copy-cat recipe that I made more than 2-3 times. While it's fun to do, it's never exactly the same, and I also believe that "food tastes better when someone else makes it". Also it can sometimes be just-as or more expensive to make some food items due to needing a bunch of ingredients that they don't sell in exactly the quantity the recipe calls for.

TheJoeMan•20m ago
As an alternative for better lubrication of two-metals-rubbing together (door hinges, simple tools, etc) I use Tri-Flow because it has PTFE that stays as a white powder. If you have a stuck bolt, PBBlaster wicks into the threads better. And if you have sticker glue, use GooGone.
legitster•14m ago
If it wasn't eminently obvious, most of these "secrecy" programs are marketing fluff.

The actual ingredients are literally on the safety data sheet: https://files.wd40.com/pdf/sds/mup/wd-40-multi-use-product-a...

The company can brag that their formulation has a special blend of herbs and spices, but someone who wants to can obviously make their own special formulation and say that theirs is secret too.

More importantly, the proof of the pudding is in the eating. And there is nothing particularly special about WD-40's formulation anymore. WD-40 consistently performs worse than nearly any other available penetrating oil. https://www.youtube.com/watch?v=xUEob2oAKVs It's a terrible long term lubricant (because it's designed to evaporate, it actually concentrates gunk and grime).

WD-40 themselves have come out with improved "Specialist" formulations that mostly just copy other, superior products.