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3M tape with anisotropic z-axis electrical conductivity

3m.com

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Re: 3M tape with anisotropic z-axis electrical conductivity

#91

Post by franga2000 »

dan000892 wrote: post #17

This stuff is rad. I took a class on hardware implants with Joe Fitz a couple years back—on the heels of that wholly unsubstantiated Bloomberg article about China embedding rice grain-sized hardware implants into Supermicro motherboards that magically found their way only to select F100s and gov’t agencies—where we made a PCB to interface an ATtiny85 to an unpopulated UART header on some IoT device but instead of sol…

UART pins! That is such a good idea!! I need to get some of this stuff and make some stick-on connectors so I don't have to solder pins whenever I need a UART for 30 seconds to unbrick a router or something

Re: 3M tape with anisotropic z-axis electrical conductivity

#92

Post by Rebelgecko »

aaaaaaaaata wrote: post #88
Rebelgecko wrote: post #70

Earlier quoted context omitted.

If you didn't already know, 3M shareholders can sign up for an annual holiday box. It costs money to order, but it's still much cheaper than buying the individual components (although if you don't need command hooks or post-it notes it might not be worth it for you) Full disclosure: I am the proud owner of one share of MMM.

Proud, but only one? What's the calculus there, and why proud — if you don't mind me asking?

It was a slightly tongue in cheek comment :) You need to own at least 1 share to be eligible for the annual gift box, so I own one share. I think it's a solid dividend stock if you're into that kind of thing, but I'm not. I try not to have too much of my portfolio invested in individual stocks, or do anything else that would make the late Jack Bogle disappointed in me.

Re: 3M tape with anisotropic z-axis electrical conductivity

#93

Post by raverbashing »

01100011 wrote: post #12

A while back I invested in 3M because it's a company that makes so many amazing and industry leading products and I thought they'd do well. A couple years later and the stock is just lagging. I guess they're dragged down by their environmental lawsuits these days. As a human, I'm appalled at their environmental track record but as an engineer, wow they really do so many things so well.

The question that we should ask in those cases is: how are their dividend payments going?

Re: 3M tape with anisotropic z-axis electrical conductivity

#94

Post by markdown »

mlindner wrote: post #72
markdown wrote: post #27

Earlier quoted context omitted.

Their "prowess" saw DuPont give cigarettes laced with new toxic chemicals they made to their employees to test the chemicals effects. Every human on earth has Dupont chemicals in their blood that will never go away, but accumulate over the course of our lives. These are "forever chemicals" that never break down. When you die you pass them on. They are in the animals you eat, in the beverages and water you drink, they…

Your post comes across as being written by someone who is unhinged rather than someone trying to make a convincing argument. > This is the result of American capitalism and the worlds most corrupt banana republic legislature where bribery is so bad they made it legal. And things like that just sound silly and trying to string a bunch of buzz words together.

What about that did you not understand? You have a corrupt government, where no law gets passed without input from corporations via their lobbyists. They have this access because they pay bribes for the privilege. That's banana republic levels of corruption.

The reason this is relevant is because your FDA and EPA are both captured organisations, which is what allows Dupont and these other environmental terrorists to go about their business unhindered https://en.wikipedia.org/wiki/Regulatory_capture

Re: 3M tape with anisotropic z-axis electrical conductivity

#95

Post by dTal »

t_mann wrote: post #51
jlebar wrote: post #39

Earlier quoted context omitted.

> A while back I invested in 3M because it's a company that makes so many amazing and industry leading products and I thought they'd do well. A couple years later and the stock is just lagging. The relevant question isn't whether they make great products, but whether their stock is undervalued. We in the tech world are used to "great products" -> "stock price always goes up", but in the "real world" there's no reason…

And an efficient-market-PoV should, from an investor PoV, be put back on the shelve together with the other econ fairy tales like general equilibrium, rationality,... There's a reason funds prefer to hire STEM PhDs over economists.

No. An "efficient-market-PoV" isn't equivalent to the statement "the market is always 100% efficient", and in fact the entire concept of speculative investing is in fact predicated on this. If you want to beat the market, you must find the place where the market is inefficient, and the only way you can do that is if you know something that everyone else does not know.

The "efficient-market-PoV" in this instance is simply - is an observation that 3M makes good products likely to constitute information that is not already factored into the stock price?

Re: 3M tape with anisotropic z-axis electrical conductivity

#96

Post by imtringued »

dale_glass wrote: post #87
onion2k wrote: post #86

Earlier quoted context omitted.

it seems after more than 30 years the stuff is still bloody expensive Fluorinert is a super niche product. The price reflects that. I imagine the cost to produce it has dropped dramatically in 3 decades. 3M just make more profit from it now. As products mature there's no reason to believe the production process and efficiency savings will always be passed on to the consumer.

> Fluorinert is a super niche product. I mean, that goes both ways. At that price it will always be a super niche product, and never graduate to "plain niche". Look at the enthusiast market, there's no lack of fancy water cooling gizmos out there. They're bought by a small segment, but there's still a market for fancy gizmos to provide the best cooling for overclocked high end hardware. And that's exactly what I'm ge…

Every ARM Server SoC failed to make their chips available. They do deals with "hyperscalers" and then wonder why nobody wants their chips or the hyperscaler just designs their own chip and makes a dedicated SoC vendor that only sells to "hyperscalers" obsolete.

Re: 3M tape with anisotropic z-axis electrical conductivity

#97

Post by michaelt »

dale_glass wrote: post #87
onion2k wrote: post #86

Earlier quoted context omitted.

it seems after more than 30 years the stuff is still bloody expensive Fluorinert is a super niche product. The price reflects that. I imagine the cost to produce it has dropped dramatically in 3 decades. 3M just make more profit from it now. As products mature there's no reason to believe the production process and efficiency savings will always be passed on to the consumer.

> Fluorinert is a super niche product. I mean, that goes both ways. At that price it will always be a super niche product, and never graduate to "plain niche". Look at the enthusiast market, there's no lack of fancy water cooling gizmos out there. They're bought by a small segment, but there's still a market for fancy gizmos to provide the best cooling for overclocked high end hardware. And that's exactly what I'm ge…

I suspect some of these products have a funny price curve.

If Fluorinert costs $300/litre today and you cut the price to $100/litre - that's still far too expensive to become a mainstream PC coolant. It's not like there's a proven market for mineral oil PC cooling.

Could be, if you cut the price of Fluorinert by 2/3rds, you'd just be giving a discount to your existing customers, for whom price is no object anyway.

Re: 3M tape with anisotropic z-axis electrical conductivity

#98

Post by Gravityloss »

Gravityloss wrote: post #83
markdown wrote: post #52

Earlier quoted context omitted.

https://www.popsci.com/story/environment/dark-waters-chemica... Basically, the US government allows companies to sell new chemicals they invent, completely unregulated. You could make a toxin today that kills everyone who touches it 10 years after they ingest it, and you would be free to market and sell this product. The chemical is presumed safe until evidence to the contrary comes to the knowledge of the govt. That…

There is now REACH in EU.

https://echa.europa.eu/regulations/reach/understanding-reach

Re: 3M tape with anisotropic z-axis electrical conductivity

#99

Post by kadoban »

mardifoufs wrote: post #45
dan000892 wrote: post #17

This stuff is rad. I took a class on hardware implants with Joe Fitz a couple years back—on the heels of that wholly unsubstantiated Bloomberg article about China embedding rice grain-sized hardware implants into Supermicro motherboards that magically found their way only to select F100s and gov’t agencies—where we made a PCB to interface an ATtiny85 to an unpopulated UART header on some IoT device but instead of sol…

Yep! But it sadly cannot replace soldering for denser pinout layouts, unless a lot of pressure is applied. Someone tried though; https://tomverbeure.github.io/2019/11/21/Z-tape.html (A bit off topic but that Bloomberg story is still such a mystery to me. It went into quite a bit of details and claimed it had tons of sources, so even if it was a completely false story whoever fabricated it must have put insane amounts…

The Bloomberg story, my thinking is that it was probably true, but someone from national security forced them to clam up.

Re: 3M tape with anisotropic z-axis electrical conductivity

#100

Post by alkonaut »

Would be extremely useful to get an explanation of what 3M means is the "Z-axis" of the tape. Along the tape plane? Across the tape plane? Through the tape plane?

I can see uses for all, but how you'd apply it would certainly differ if depending on which one is Z....

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