hwillis

61 ms·

631.
by hwillis 6y ago
sure, but it's also full of weird gimmicky shit so who knows when it'll show up, if it gets scaled. I'm thinking more about things like the roadster. Even for being relatively similar, the accents are all more aggressive and
632.
by hwillis 6y ago
They are not going to weld castings except maybe for very small cracks and even then it's very unlikely. The casting is not in a place that could be repaired if it were steel, though. It's the main structural member, located beh
633.
by hwillis 6y ago
It depends very heavily on the type of metal. Metal strength is primarily determined by the shape of the microscopic grains making up its structure. Pressing, stretching, and squeezing those grains is one way to shape them. Chemical proc
634.
by hwillis 6y ago
> I find hard to believe that no one has thought about this before These kinds of castings are relatively new, and car companies are surprisingly unwilling to spende more than low millions on moonshot tech. It was not an insignificant g
635.
by hwillis 6y ago
> how easy is it to change what this casting machine produces? Swapping dies takes a few hours. Making new dies takes many months and costs some fraction of a million dollars. > I am curious how long they will go without changing the
636.
by hwillis 6y ago
A 2017 article is very out of date. The Model 3 rear subframe is cast aluminum: https://insideevs.com/news/408645/tesla-model-y-mega-casting... Which is certainly a safety critical structural element. Additionall
637.
by hwillis 6y ago
It is certainly true for 50-60k cars (the Y's price). You likely wouldn't even consider keeping a car with frame damage until well over double that.
638.
by hwillis 6y ago
Well, two layer anyway. People have printed overlapping traces into 3d printed volumes before, but it's a very flawed process. High currents are basically out of the question (resistance too high), analog voltages are very hard (incon
639.
by hwillis 6y ago
Ben Krasnow actually did this at home! https://youtu.be/Tx2B5hI4w1U
640.
by hwillis 6y ago
A moderate-length string of quoted words (>5?) used to return zero or near zero results and a suggestion to try without quotes- imo ideal
641.
by hwillis 6y ago
> My completely-devoid-of-evidence hypothesis is that over the past 25 years, increased globalization has reduced the number of menial jobs/tasks in those two continents, thereby increasing overall day-to-day mental exercise. This f
642.
by hwillis 6y ago
I mean bill mitchell does literally believe it. The man is a complete lunatic. Rona is the #3 cause of death in the US right now. I question how much of quarantine angst is actually real. In most states it's barely a thing... You sta
643.
by hwillis 6y ago
It's millions of people who literally believe they can ignore the virus away. https://webcache.googleusercontent.com/search?q=cache:PNgXIV...
644.
by hwillis 6y ago
So your solution to bring together the left and right wing on climate change is nuclear power? Lets break down every level that is wrong on: 1. "Green people" are a tiny portion of the left wing and have little overlap with the t
645.
by hwillis 6y ago
> yet the polar bear population isn't struggling to say the least. What do you mean, "to say the least"? The polar bear population has just barely remained stable since hunting was ended. They should be growing -popula
646.
by hwillis 6y ago
About 34% of all Republicans say that the theory that the outbreak was intentionally planned is definitely or probably true. > About a third of those who have heard this claim (36%) – a quarter of all U.S. adults – say that they think it
647.
by hwillis 6y ago
It doesn't use a GAN. I haven't read the paper closely, but is uses a feature extracting network and then tries to modify the features to match a different person. It doesn't try to take advantage of degenerative states in
648.
by hwillis 6y ago
(absorbed by osmosis during my time at Zest, a JIT produce handling company) Harvest time is extremely hectic. There's a very small window to get months worth of produce picked, sorted, cooled, packed and shipped. Cooling is a major
649.
by hwillis 6y ago
You'd need direct heating, a conventional blade still would not work. The alumina spheres hold off the cutting edges and block heat flow from hotspots. A small amount of aluminum foam will melt, but once it's far enough away fro
650.
by hwillis 6y ago
the ceramic inside is alumina, so same material as both a cutoff wheel and a grinding wheel. They mention that it's not the best purity and hardness, but it's pretty good.
651.
by hwillis 6y ago
It's an alumina fiber reinforced blade, same ceramic as in the material. It's the most common grinding wheel material. Diamond blades are not especially good at cutting. They only used when absolutely necessary, ie when your mat
652.
by hwillis 6y ago
It would probably not be very good at cutting, and would just get very hot. Just because the blade doesn't wear away doesn't make it good at cutting. One way to make something resist abrasives is for it to be/sustain very hi
653.
by hwillis 6y ago
There are no rwandan warlords... By far the most influential force among Congolese miners are Chinese companies
654.
by hwillis 6y ago
Paul Kagame is certainly a piece of shit but he is definitely not a warlord
655.
by hwillis 6y ago
A million mile battery does not mean the rest of the car lasts a million miles
656.
by hwillis 6y ago
> because the motors and other moving parts become increasigly efficient (& are already much better than a combustion engine) then less energy is required for the same resulting work The resulting work is more important than the effi
657.
by hwillis 6y ago
The issue with a million mile battery is one of testing. If your car has 500 miles of range, a million miles means 2000 charges and discharges. At a standard C/5 rate, that's 2.3 years to finish testing. Even at a fairly brisk
658.
by hwillis 6y ago
> lithium ion battery will surpass both energy and power density of gasoline, which seems impossible even from physics point of view. Sure, I can do the math on that. Gasoline has about 45 MJ/kg[1]. 1 kg of lithium contains 868x10
659.
by hwillis 6y ago
That's not true in the slightest. Energy per instruction varies a lot but has not decreased that much on recent nodes. The resistance growth just outpaces the shrinking capacitance of the gates. On top of that processors are faster,
660.
by hwillis 6y ago
I can't find a free version (much love to anyone who hosts) but Matt Lacey's energy density estimator is always good for situations like these: http://lacey.se/apps/cell-energy/

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