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Comment Re:I think the answer is obvious (Score 1) 199

Reliable is more important than cheap.

You need both for uptake. The average person won't spend more than about $300 for a gadget, and they'd rather spend $100. $300 is a pretty feasible price target for a small printer with one extruder. You could sell it without a heated bed at that price, and tell people to print only in PLA. There is high-temp PLA now which can be annealed in an oven and then handle somewhat higher temperatures, so that would cover most people's needs. Do a delta since it is cheaper to make it stable and avoid backlash, and because it uses only four sensors — ideally three hall for the X Y Z_MAX, and an inductive on the Z_MIN for bed leveling. $300 is not even a challenging price point; it can be even cheaper if you skip a display, which I don't actually think is that useful if you're not installing the printer in a remote location.

Comment Re:Stupid (Score 1) 221

Your green option is completely unviable not to mention that it has the same problem that you mentioned yourself, it's similar to petroleum diesel, hello NOx and particulate emissions which are primarily the reason for this ban in the first place.

No. Politics is the reason for this ban in the first place because the NOx is a solved problem with urea injection and the particulate emissions of gasoline are more hazardous and just as prevalent as those from diesel.

Comment Re:How the fuck.... (Score 1) 221

The proliferation of gas at service stations is even higher in Oz than in Europe. I had no problem driving an gas powered Commodore from Perth to Broome, I don't see why trucks would either.
Also the really long haul trucks have much bigger tanks than the traditional ones.

Yes, but for a laden truck the question is whether it's getting high or low single-digit MPGs, so it's still an issue. The energy density of ethanol or propane is arse.

Comment Re:Examples? (Score 1) 182

I would not be so skeptical. I used to read a lot of Zero Hedge. I still read RT.com from time to time. If you accept that ALL news has a bias, it becomes apparent. In the case of ZeroHedge, their bias is that economy is about to crash, again. And the price of gold is about to skyrocket, any day now. And the American political system sucks, which they are actually correct on.

Propaganda is entwined with the reality of nation states. The United States puts out propaganda about Russia. They do the same in return.

With the internet, the propaganda is more obvious and easier to spread.

The older I get, the more I realize that everyone has an agenda. Zero Hedge has an agenda. The Washington Post has an agenda. The Communist Party of China has an agenda.

The thing is, life is short. At this point, I do not have time to focus on other people's agendas unless they intersect with and further my own.

This whole "Russian Hackers Fucking with Democracy" is the greatest propaganda coup of all time. It still blows my mind that the media managed to completely obfuscate all of the evil shit that the Democratic party and Hillary Clinton were up to by bringing the Russian bogey man out of the closet. (Not that it matters, but I didn't vote for Clinton or Trump).

In my brief 40 years as an American, I was born into a world where we were supposed to be scared of Russians. To being told that the Russians weren't a threat. To being told that the Islamists that the CIA funded to fight the Russians were the threat. To now being told that the Russians and the disciples of those we trained to fight the Russians are a threat.

To be honest, I think the biggest threat to America at this point is America. Between the ignorance of the electorate and the iron grip that the military industrial complex has on the economy and the government, we are like the big, retarded bully who doesn't even know why he's angry, but sure as hell is going to beat the shit out of anyone who calls him retarded.

Comment Re:I think the answer is obvious (Score 1) 199

3D printing is still fiddly, complex, error-prone, expensive and slow.

This. We could stop here but let's not, I have more to say as well.

FDM style printers (the cheapest kind) require wrapping your head around calibration, nozzle diameters, temperatures, slices, alignments, supports, bed heating, the properties of PLA / ABS and all the rest. If you're lucky you'll set the printer going and hours later your efforts will yield some crudely finished single colour part. If you're unlucky you'll come back to discover something that has skewed left, warped on its base, or turned into some dante-esque spider's web that has stuck to everything.

#1 thing that should have been done/should be done to improve 3d printer uptake is working automatic bed leveling. AFAICT (and I am about to test this theory) the best way to accomplish this is with an inductive sensor designed for iron, detecting an aluminum print bed. Aluminum is pretty much the best base anyway, since glass can break all to crap while you are removing your print job. Inductive sensors literally cost five bucks and the hardware needed to interface one which isn't already present on e.g. RAMPS literally amounts to a grand total of one voltage divider, aka two resistors. IIRC 10k and 15k are typical, but whatever it takes to get the output signal down to 5v. It doesn't even matter whether you get one which is NO or NC because the software (Marlin, in my case) can detect either type of signal with correct configuration.

The #2 thing that should have been done is more centralized sharing of print temperature settings for materials. After bed leveling, just finding working print settings is the biggest PITA. If you're not buying from someone who gives you some starting values to work with, then you have to go on a web safari quest to figure out where to start.

Way down the list, probably, is eliminating all these stupid microswitches. Hall sensors are more reliable and cost little more. Even if you have to get them on eBay, whole PCBs with a sensor mounted on them are only about twice as expensive as microswitches worth buying.

As for the single-material print job issue, this is the printer I've got, it's reasonably priced and its great sin seems to be a crap auto-leveler. I've got an inductive one in the mail. Deltas take most of the fiddly-ness out of the system at the cost of potentially dropping a hot extruder on your print job if you don't program them correctly. Which all comes back to your point... they should be set up better for the user. I am willing to do all this fooling around to get the thing working but the average user just wants to print and have something come out.

I actually don't think having a crappy-looking single-color print job come out is what keeps most people uninterested in 3d printing at all, though. I think it's really all about the PITA factor. If you offered people a machine which was both cheap and easy to use, they'd jump all over it even if it only had typical resolution and speed and was limited to a couple of materials.

Comment Re:logging (Score 1) 250

what did they replace SystemD with and how does it log?

Unless they tell you so, you should assume they did something sensible like use something syslogd compatible, and if you don't like it, you can switch to another one. From googling I get the idea it's rsyslog.

Comment Re:Init alternatives (Score 1) 250

The truth is that the boot speed improvements of systemd are effectively notional. The boot process is so fast now that starting in parallel only saves you time when something goes wrong. If you regularly have a problem during boot, then you should think about fixing that regardless of what your init system is.

Comment Re:I thought diesel ran cleaner (Score 1) 221

Expanding isn't "reacting to heat".

What? What do you call it, then? I didn't say it was reacting with heat. Although it does react with oxygen in the presence of heat, to form NOx, that's explicitly not what I was talking about.

But, back to the original point: Diesel engines take in much more atmospheric air than gasoline engines when running at normal loads (highway cruising).

Yes. But they consume no more when wide open. The size of the exhaust is defined primarily by the maximum flow, not the cruising flow. (That defines other design characteristics more.) Diesels tend to have higher peak boost in spite of their typically higher static compression ratios, but they also tend to have significantly lower RPM limits and tend to run less RPMs while cruising.

Of course, all of this has been muddied by the introduction of the direct-injected gasoline engine, and by developments in diesel engine technology. Not only do GDI motors have higher cylinder pressures and thus higher temperatures, but there are also now diesels with [automated] throttles. As well, the recent crop of automatic transmissions with many gear ratios (8 now being common, 9 not being uncommon, and 10 beginning to roll out) and multiple overdrive ratios has led to gasoline engines being used at much lower RPMs...

Comment Re:How the fuck.... (Score 1) 221

Yeah maybe in America. But that is a fantasy land in terms of fuel. This article however is talking about other places in the world.
In Australia for example most heavy busses have switched to running nat gas because it was cheaper. Most taxis and many passenger cars did too though these are being displaced by electric.

all of which makes sense, but what about long-haul trucking? the hauls are really long in oz.

Comment Re:Think outside the container... (Score 1) 221

I can't help but be a little amused at all the people saying cities could never ban Diesel because there's no acceptable alternative.
There is, of course, just not for long-haul trucking.

You could probably switch to turbine-electric and burn... well, whatever you wanted really, but the only thing which would have the same kind of energy density is jet fuel. That would only cost what, an order of magnitude more or something? But the good news, everyone, is that we're all going to be getting higher-grade fuels whether we like it or not. It's not going to be possible to get much better emissions out of internal combustion vehicles without them. The automakers want to see even higher-grade diesel fuel, and higher-octane gasoline.

Of course, if the Trump takes a Dump on CAFE somehow then we might well not get any of this stuff any time soon...

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