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User: smellsofbikes

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  1. Re:Not cool enough on Direct-to-Vinyl Recording Makes a Comeback (Video) · · Score: 1

    I'm holding out for 3d printed records.

    The Star Wars theme song, being played from a 3d printed disc on a vintage kids' Fisher-Price record player.
    Someone's also printing Beastie Boys for Fisher-Price.

  2. I've never lived in a state where the tolls were retired and the booths torn down.

    I'm not saying it's common, but it does happen. The Denver-Boulder Turnpike, aka US 36, was constructed as a toll road in 1952 and the tollposts were removed when it was paid off in 1967. http://www.aaroads.com/west/us-036_co.html
    Similarly, pretty much all the Colorado passes were originally toll roads when they were originally chiseled out from the mountain rock in the 1870's. The only ones that still are, are the two roads that go to 14,000 feet: Pike's Peak and Mount Evans, and the rationale, of having to dig out 8-12 meters of snow on a regular basis, seems fairly sound.

  3. Re:Which is the best 3d printer? on 83-Year-Old Inventor Wins $40,000 3D Printing Competition · · Score: 1

    Unfortunately, I don't have any experience with ready-to-print extrusion-type 3d printers, just DIY ones, and the ready-to-print photolithography printers I've worked with, I can't recommend anyone purchasing.

    If you're thinking about making chess pieces for standard-sized boards, that's going to be at the edge of the resolution an extrusion-type printer can do, so in any case I'd recommend finding someone/a hackerspace with a printer that has a 0.5mm or 0.3mm nozzle and seeing what their prints look like, to see if it'll match what you're intending to do. There's a lot of research going on right now about using vapor-phase acetone to smooth the surfaces of ABS prints, which makes fine-resolution prints look great, but if the detail you need isn't there, that's not going to fix it. It just reduces the made-in-Minecraft appearance.

  4. Re:Which is the best 3d printer? on 83-Year-Old Inventor Wins $40,000 3D Printing Competition · · Score: 4, Informative

    I am interested in buying a 3D printer. Does anyone have experience / recommendations? The cheapest I have seen is $500 at http://store.solidoodle.com/ but I'm curious if it is worth spending more for a 'higher quality' printer.

    Figure out what you want to print. There's a fairly large variation in build area, so if you're wanting to print stuff the size of textbooks you're going to want a larger printer. Likewise, most extrusion printers have a minimum print resolution in the 0.5mm or thereabouts area, so if you want fine detail you may be wasting your money on an extrusion-type printer. Printers with better resolution are usually photolithography-based and an order of magnitude more expensive, at which point a commercial print service like shapeways seems a lot more attractive.
    With any extrusion-type printer, I think the most important item is that it's popular, because you're going to spend time debugging and adjusting and generally fussing around with it; if you get a snazzy brand-new design you're the beta tester. If you get something that has three years of hundreds of people working with it, all the problems you can encounter have already been encountered and dealt with.
    If you want to get more printer for less money you can build it yourself: there are a variety of plans where you buy a printed set of parts, source all the structural parts yourself, and make your own. What I said above about finding one where design and implementation issues are well-known and there's a support community in place goes double for this option.

    I strongly recommend that you only start down the 3d printer path if you have projects for which you already have need for printed items; if you get one just because it's the hip thing to do for geeks, you're likely to be wasting your money. With that said, once you have one, you suddenly start printing a whole lot of things you never thought you would, because you can: I have friends who print live animal traps, plumbing parts, and light bulb fixture components now that they have 3d printers.

  5. Re:Titanium, the metal of the 21th century on New Technology Produces Cheaper Tantalum and Titanium · · Score: 1

    Although, for many aerospace applications there's no substitute at almost any cost. It allows the weight of parts, that would otherwise need to be made of steel or nickel alloys, to be cut nearly in half (and that adds up quickly since it applies to a large portion of the main structural components in things like jet engines).

    If the price does drop drastically, I'd expect to start seeing Ti show up a lot more in areas like the automotive industry, where weight is important but it's use had been limited by cost.

    My understanding was that the primary drivers for using titanium in aerospace were heat and fatigue characteristics, and that otherwise aluminium was almost always a better choice, if the design was capable of using it well. (Similar specific modulus of elasticity, so if you have the space you can use large-diameter tubing to get lower weight for the same performance.) As such, I'd expect to see automotive titanium used only in areas where volume or fatigue is a big concern. Are there other areas in which it would do well?

  6. Re:3d printing the new raspberry pi on 3-D Printing Pen Can Draw In the Air · · Score: 4, Informative

    If you don't already know this: you should consider the resolution you need pretty carefully. If you're printing stuff for 1:48 or larger models, an extrusion-based 3d printer will probably do okay for you and they're not too expensive: some exist under $500. But if you're working with smaller scales than that, you're likely to need some sort of photolithography setup and those are expensive to buy and surprisingly expensive to run because of the raw materials cost; it's hard to justify buying one for yourself compared to making the models and having shapeways.com actually print them.
    But if you're working larger-scale stuff, it's amazing how much use you can get from a cheap extrusion printer; once you have one, you start using it for scads of other things you never thought about doing previously.

  7. Re:3rd parties on Third 2012 US Presidential Debate Tonight: Discuss Here · · Score: 1

    We as a nation always complain about our 2 party system and all the problems that come with it. We also frequently joke about how neither of the candidates are exceptional. We then proceed to completely ignore all third party candidates. Realistically no third party candidate can win, but the more votes they get, the more seriously they will be taken in the future. Parties need to get 15% to get in these debates.

    Well... it was 5% until Ralph Nader was polling 8%, at which point they changed it to 15% to make sure he didn't get heard. So there's not really any reason to believe that a third party polling 22% would actually get heard: they'd just change it to 25%. It's a rigged game: http://en.wikipedia.org/wiki/Commission_on_Presidential_Debates#Criticism

  8. Re:WWII glider yank-recovery on CIA: Flying Skyhook Wasn't Just For James Bond, It Actually Rescued Agents · · Score: 1

    I don't have any written records. I talked to a guy who was a glider pilot and he had lots of stories about how well they could have worked and how poorly they did work because of lousy surveying of landing ground. He'd seen ones get yanked into pieces in snatch pickups and was of the opinion that the reason it was rarely used was twofold: risk, and higher-ups were deliberately sabotaging the delivery of snatch-recovery equipment (poles and lines) because they thought the risk outweighed the benefit.

  9. WWII glider yank-recovery on CIA: Flying Skyhook Wasn't Just For James Bond, It Actually Rescued Agents · · Score: 2

    In WWII we were recovering entire gliders this way, not just people: http://www.silentwingsmuseum.com/pdf/RetrievalSystem.pdf -- a history of airplane/ground retrieval systems specifically relating to the effort to pull Waco CG4A gliders big enough to hold 15 people, from the fields where they'd landed back into the air and tow them back to the launch airbase without the tow plane landing. It was dangerous work and pretty often it ended up just tearing the glider into pieces but it was successful a fair amount of the time.

  10. Re:Fuel Saving on Air Force Lab Test Out "Aircraft Surfing" Technique To Save Fuel · · Score: 1

    The other thing that's nice about cruising at high altitude is you go faster for the same fuel burn, since the power required to overcome air resistance varies as the cube of airspeed. An airplane that's doing 90 knots at 2000' will do 120 knots at 17,000' (if it can get there.) So even though your plane has less power at higher altitude, it goes faster -- and that, too, can reduce total fuel used, since you burn a bit more fuel but spend less time on the whole flight.

    And by the way, burn-and-coast is actually a viable fuel economy strategy in cars if you don't gun it: if you accelerate gradually to somewhat above your best fuel economy speed, then coast (and get free distance) you can under some circumstances exceed the fuel mileage of constant-speed driving. http://en.wikipedia.org/wiki/Maximization_of_fuel_economy#Burn_and_coast has more details.

  11. Re:The Airlines should take notice. on Air Force Lab Test Out "Aircraft Surfing" Technique To Save Fuel · · Score: 1

    The Airlines should take notice.

    Judging by the formations of geese and pelicans I've watched flying by in large groups, I have to assume this effect can be carried from one flyer to the next in a chain and isn't confined to just two flyers. The next question would be "Do all trailing flyers receive this 10% fuel savings, or is there some sort of diminishing return at play?"

    They all get it, because what they're doing is sitting on the upwash of the air curling off the tip of the wing ahead of them, and that doesn't change. (Well, it's a tiny bit smaller for the second plane than the first, because the second plane is sitting on the upwash from the first one, but any subsequent planes will have their weight offset by the same amount and have the same resultant upwash.)
    One interesting effect of this is that the same upwash is curling off the other wingtip, as well. So you could have two planes surfing on the lead plane's wake, and two planes surfing off each of those planes, and so forth. You run into geometry issues: there's not enough room to fit four planes in line behind the two planes following the leader. However, a single plane in that location might manage to be in the upwash of *both* planes ahead of it.
    You could have a diamond/triangle of planes, with the lead plane expending the most energy, all the edge planes expending somewhat less, and all the planes in between spending 2x less.

    That entirely disregards the jetwash/propwash problems of flying right behind another plane (which are _significant_ -- when you do a two-minute 360 degree turn and hit the disturbed air from two minutes ago it really jounces you around, and this would be more like the 0.1 second old turbulence) but it's possible in theory.
    (Sometimes you'll see geese flying in multiple-armed v's as they're taking advantage of this.)

  12. Re:If your skills are like mine on Ask Slashdot: What Equipment and Furniture For an Electronics Hardware Lab? · · Score: 1

    I'd suggest you start with a fume extractor and fire extinguisher

    I vote this, and would add a couple of smoke and CO detectors.
    I've also found that, for my lab at least, having several big boxes of baking soda around is really nice. They'll put out small fires with much less cleanup mess than a fire extinguisher, and they're much more attractive when the fire is flaming kerosine/gasoline, are quite handy when the spill is hydrochloric acid, and if it's a basement lab would probably help the mildew smell so many basements seem to have.

    As other people have said: boom microscope. Available off ebay new for cheaper than many used scopes, with a working distance of almost half a meter, which is wonderful.

    My work surface is a whole gigantic mass of pine 2x4's glued together face-to-face. It's very sturdy, resists burns well, and I don't feel the slightest bit of hesitation at putting screws into it to hold things down. I had a job involving lots of LED's, so I drilled a hole the size of a standard through-hole LED and would stick each LED in it and solder the wire harness onto it. I screw contoured oak bits onto it for tubing-bending, bolted the lathe and desktop mill directly to it, drilled a hole in a third-hand and nail that wherever I want it so it won't tip over. Awfully convenient. And if it finally has too many holes/burns/problems, it'll cost me about $40 to build a new one if I buy new framing studs, or a lot less if I just keep accumulating scrap lumber that I'd otherwise burn in the fireplace.

  13. Re:Why is the Obama administration objecting ? on Supreme Court To Decide If Monsanto GMO Patents Are Valid · · Score: 1

    While I agree with your assessment, I think we need to have a Democrat as president to successfully address exactly the sort of civil rights issues you're talking about, because when a Republican is president, Republicans won't openly criticize what he's doing. It's my opinion, based on observation, that the only way to get reductions in the power of the executive branch is to have Republicans force it on an unwilling administration. Democrats are too scared of being seen as soft on crime and terrorism to ever effectively behave like this.

  14. Re:Get with the times on What Happened To Diaspora, the Facebook Killer? It's Complicated · · Score: 4, Interesting

    I use Diaspora. I thought -- and think -- it's eerie just how much G+ looked like diaspora, and to some extent still does. They're both working off the same mindset about how networking should function. But once G+ came up, activity in my diaspora circles dropped to a standstill. It appears to me that most all the people who would use diaspora chose to spend their limited time on G+ because of the networking effect.

  15. Re:Can't agree more on To Encourage Biking, Lose the Helmets · · Score: 1

    You "know" ?

    Can you prove it? Or you THINK it made a difference? Or do you LIKE to believe it?

    I can't prove anything. But the last two serious bike-car crashes I had in which my head was involved, the doctors had to put stitches in my jaw and ear right up to where my helmet was, but no stitches above that point. Now, it may just be coincidence that all the damage from glass cuts and abrasions stopped right where the helmet started, but I doubt that, insofar as, y'know, it's hard to get glass cuts through 3 cm of styrofoam and a hard shell covering.

  16. Re:But that's not the real problem. on To Encourage Biking, Lose the Helmets · · Score: 5, Informative

    Roads were made for bicycles, in a very literal sense. In the 1890's, cyclists pushed for legislation to get the first prepared-surface roads put in place. That's how the League of American Cyclists got started: as a lobbying group for getting better roads for cycling.
    Cars then came along and took over those roads.
    And yeah, ever since gas prices went through the roof more people are riding bikes. That trend is going to increase.
    For the record, when I'm on a bike I stop for every stopsign and stoplight, and I've been hit twice by cars that didn't do the same. (Which is a large part of why I stop for every stopsign and stoplight.) Cars regularly violate traffic laws. So do bikes. One difference is that cyclists very rarely kill people when they violate traffic laws. That doesn't make it right, but part of the underlying cyclist/motorist tension is that cyclists think they're not going to hurt anyone by running lights, while the same action by motorists is seen as being murderous behavior, and as such motorists resent the hell out of seeing cyclists do it. (and that's another reason I don't run lights: because it pisses people off.)

  17. Re:Invasive? on Cheap, Portable Ultrasound Could a Be Lifesaver . · · Score: 1

    "GE’s Vscan is a handheld, pocket-sized visualization tool that allows for non-invasive ultrasounds."
    I can only imagine the military-grade ultrasound cannon required for an invasive ultrasound exam.

    Since none of the other commenters replying seem to have yet touched on this, I was involved in the design and manufacture of ultrasound imaging devices that were fed into the femoral artery and snaked up to image the heart from the inside, aka invasive ultrasound.

  18. Re:Tell me about it on When the Hiring Boss Is an Algorithm · · Score: 1

    LOL I'm sure they'd get right on it!

    State legislators, particularly Representatives, tend to be a whole lot more responsive to their constituents than do their counterparts at the national level, for the simple reason that they represent a lot fewer people. For example, in Colorado, we have about 5.1 million people and our House of Representatives is 65 people, which means each Rep has about 78,000 constituents, of whom about a third are actual voters (going from turnout figures in recent elections). Those are numbers small enough to get some real attention when a constituent has a problem, and I know several people who have done just that.

    I'm in Colorado. My state rep showed up at my door, unannounced and unasked, to ask if we have any concerns with how well she was doing her job. Not her people -- she, herself. Going door-to-door in her district, on foot, talking to people, whenever she had time. I can get behind that kind of politician.

  19. Re:Devil's advocate here... on The UK's New Minister For Magic · · Score: 1

    I was flipping through some book of Eastern medicine, and wanted to read the section on type 1 diabetes (since I have it), and it was hilarious. Everything else could be cured or treated with various things, but for this they recommended seeing a doctor.

    I don't know if this is precisely funny or not, but I have a raft of friends who are into alternative medicine and homeopathy, and they have unspoken lists of what conditions they'll try to treat with homeopathy and aromatherapy -- headaches, menstrual cramps, in one case eczema -- and what conditions mean drop all that junk and head for a doctor -- broken arms, whooping cough, yeast infections. What it says to me is that the problems that are life-threatening and that modern medicine can treat, are (generally(*)) ones that everyone will go for the modern medicine option, but the problems that are just flat-out difficult, they'll go for the woo-woo stuff because the effectiveness of the treatments (modern medicine, homeopathy) isn't that much different and the woo-woo stuff is administered in a somewhat more personally appealing/attractive way. From that standpoint, maybe it's not such a bad thing, aside from the fancy sugar-water being devilishly expensive. But if it makes people feel better -- or think they feel better -- I guess it's worth something.

    (*) with that said, I had an idiot friend who tried to homeopathically treat a necrotizing brown recluse bite. She died. I'm not kidding or exaggerating. I also just read a book about BRCA-1 and people who have tried to treat breast cancer using naturopathy and electrostimulation. The description of untreated end-stage breast cancer was severely unappetizing.

  20. Re:What's the hurry? on Boeing's X-51 WaveRider Jet Crashes In Mach 6 Attempt · · Score: 1

    The usual estimate is that if you can drive it in 5 hours, it's faster to drive than fly commercially. However, if your time is worth a lot -- and you won't save money doing this but you will save time -- you could buy a small airplane and get your pilot certificate. Small airplanes do about 100-120mph in a straight line and there are typically small airports within 20-ish miles of anywhere on both ends, so as long as your relatives are willing to pick you up at the far end you could have more like a 2 1/2 hour each way trip. And the view is great.

  21. Re:Except you can physically block ground vehicles on Could Flying Cars Actually Be On Their Way? · · Score: 1

    Except planes have to file flight plans

    AIUI flight plans only have to be filed if a plane is going to be flying under IFR or flying in controlled airspace and there are lots of small quiet airstrips out there.

    You _can_ file flight plans if you're flying under visual flight rules (and it's strongly recommended) but it's optional. There's also no enforcement mechanism with flight plans: if you file a flight plan that says you're going from X to Y and will be at Y in 3 hours, and instead fly to Z in two hours, nobody's going to notice until three hours has passed and you haven't called in to close your flight plan. (And you could even call in from Z and close your flight plan, claiming you'd flown to Y, and nobody would ever know or care that you'd done something different.)
    If you're flying under instrument flight rules you need to file a flight plan and will be tracked with radar so they know where you are and can tell you where to fly. But even that's not the whole story: if you fly out of an airport through clouds, under instrument flight rules, and then get into clear sky you can talk to air traffic control and go to visual flight rules, cancel your flight plan, and go fly wherever you want with no radar tracking/flight following.

  22. Re:98% on Bitcoin-Based Drug Market Silk Road Thriving With $2 Million In Monthly Sales · · Score: 4, Interesting

    Drug dealers are the resistance in The War on Drugs.

    Actually, drug dealers are the ones hoping that the war on drugs continues, or they'll be out of work.

    This is seriously on-topic. I know a pot dealer/grower who is spending a good chunk of his income fighting against continued/expanded legalization and medical marijuana initiatives because the ones already in place in this state are financially crippling him. Suddenly he's no longer the long-haired hippie: he has a suit, short hair, and shows up at every local public meeting on zoning to argue that allowing marijuana dispensaries is immoral and a danger to our children. It's sort of funny to watch, although I'm also fairly pissed at him because I am personally in favor of medical marijuana being easily available.

  23. I know lots of people who hate big phones on Don't Super-Size My Smartphone! · · Score: 5, Interesting

    My wife got an HP Veer specifically because it's smaller than a credit card. Most of her clothing doesn't have pockets big enough to fit an iPhone, so she got a dead-end phone with an antiquated OS because she's not going to carry a giant phone around. Her friends all think it's fantastic.

  24. Re:I actually do this on Why Junk Electronics Should Be Big Business · · Score: 1

    I'm interested. I have boxes of circuit boards, immersion-gold-plated, that I'd like to get rid of. About 1/3 are either stripped of major components or bare, the other 2/3 have discretes and a few IC's.

  25. Re:Yeah the money may be good on Why Junk Electronics Should Be Big Business · · Score: 1

    Beryllium Copper is ubiquitous in electronics, anywhere you need something springy that can pass a fair current: connectors, IC sockets, cable pins. It's only like 2% beryllium, but there are a lot of connectors in most electronics.