dual_sport_dork 🐧🗡️

Progenitor of the Weird Knife Wednesday feature column. Is “column” the right word? Anyway, apparently I also coined the Very Specific Object nomenclature now sporadically used in the 3D printing community. Yeah, that was me. This must be how Cory Doctorow feels all the time these days.

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Cake day: July 20th, 2023

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  • Most of the PTAC units I’ve looked at in hotel rooms have had daylight visible right through them. And I can tell you from personal experience that the GE ZoneLine machines don’t even have the hot and cold sides insulated from each other, nor the outside world. There’s just a poxy plastic partition behind the blower wheel that’s got all holes in it for mounting various components, and since this slides out with the chassis this doesn’t seal against the inside of the sleeve in any way and usually leaves about a 1/4" gap around the top and sides. Maybe there’s some kind of boundary formed by air pressure when the thing is running, but when it’s off it absolutely allows outside air into the room without much hindrance. That’s before you get into fitment of whatever current unit is installed in the old-ass sleeve in the wall.

    Even your $99 Walmart window unit has a big polystyrene block insulating the evaporator side from the condenser side (and thus also the outside).







  • This is a fairly common complaint with the output produced by any slicer using the Arachne perimeter generator, which includes Prusa and its derivatives by default now, and also Cura.

    If you are using Prusa or a derivative you can switch back from the Arachne perimeter generator to Classic in your “Layer and Perimeters” tab. If you can’t stomach not using Arachne for whatever reason, you could try messing with the “Perimeter Transitioning Threshold Angle” setting. There is some additional wordage on all of the above here. TL;DR: The Arachne generator attempts to build perimeters out of variable line widths and explicitly does not go back and fill in tiny voids like these with a separate operation. The point is that it’s not supposed to have to, but as you can see it doesn’t always work out that way.

    As others have pointed out, doing an ironing pass on your top layer may help conceal this from an aesthetic standpoint but won’t do anything for you structurally (i.e. for anyone running into this issue with a shape they hope to be watertight). The nuclear option would be to instruct the slicer to do an ironing pass on every layer which may help your print look boss at the end of things but will certainly also take forever.


  • This could still be a UMRP situation, then. Most of our UMRP or at least MAP agreements have a stipulation where we’re allowed to round the price up or down some small amount, typically up to 49 cents, in order to make the final figure a round dollar amount or make the pennies the same as the other items in our catalog (XXX.99, XXX.97, XXX.49, etc.) ostensibly for aesthetic purposes. This would also cover your system making all clearance items end in 96 cents or whatever the hell.

    This is surely a case of corporate stupidity, but whether or not it’s Apple’s stupidity or Best Buy’s stupidity I couldn’t tell you. Possibly both!


  • Typically these UMRP agreements are void once a product becomes discontinued. At that point it can be put on genuine clearance. I have to deal with that with several vendors at my business; none of them give a rat’s ass about the price once they’re no longer listing a product themselves.

    It’s more likely a combination of the two in this case; some C-suite asshole somewhere is hyperventilating about how much they’ve “invested” in stock in this product and sees clearancing it as a “loss” rather than what it is, which is unloading dead stock that they’ve already paid for at a value that is still at least greater than nothing and making room for inventory they’ll hopefully have better luck with next time. I imagine subtracting the 4 cents from the price is automatic, and is the tell their system adds to the price of any clearance item. Flagging it at clearance probably also marks it nonreturnable.

    I presume for similar reasons, one of my local Walmarts still had up until very recently a back aisle endcap full of “clearance” electronics goods which included some 32 and 64 megabyte USB 1 flash drives for, I believe, a whole three cents less than MSRP, 30 or 40 bucks each. So no wonder they’re still there.


  • I imagine this is hypothetically possible given correct and sufficient training data, but that’s besides the point I think needs to be made, here.

    Basically nothing anyone is programming in user space these days produces machine code, and certainly none of it runs on the bare metal of the processor. Nothing outside of extremely low power embedded microcontroller applications, or dweebs deliberately producing for oldschool video game consoles, or similar anyway.

    Everything happens through multiple layers of abstractions, libraries, hardware privilege levels, and APIs provided by your operating system. At the bottom of all of those is the machine code resulting in instructions happening on the processor. You can’t run plain machine code simultaneously with a modern OS, and even if you did it’d have to be in x86 protected mode so that you didn’t trample the memory and registers in use by the OS or other applications running on it, and you’d have a tough-to-impossible time using any hardware or peripherals including networking, sound, storage access, or probably even putting output on the screen.

    So what you’re asking for is probably not an output anyone would actually want.


  • Maybe! I have long maintained that if I ever luck into being obscenely wealthy, I will absolutely open some manner of food service or retail establishment similar to those I’ve worked at in the past, but not give a fuck about turning a profit and make a cornerstone of my business telling off customers for being the rude, self-centered, and entitled little shits that so many of them are. I’ll consider it a much needed public service.




  • so ginormous

    Tell me about it. The Cybertruck is an inch and some change longer and 8" wider than my ratty full size 1990’s pickup, yet somehow manages to have only slightly over half the usable cargo volume – 42.80 cubic feet vs. 70.7. And I’m being extremely charitable by treating the Cybertruck’s bed area as if it were cubic starting from its tallest point by the back glass, when in fact it’s wedge shaped.

    It also weighs 3269 pounds more (in its lightest configuration) and as we all know by now the Cybertruck’s towing and trailer tongue weight ratings are outright lies. Whereas millions of people have successfully lugged a combined total of billions of tons worth of boats, bikes, lawn mowers, and RV’s with GM and Ford pickups over the decades.

    Even for the use case for someone who “needs” a truck, the Wankpanzer is a moronic choice.


  • They’re also monstrously inefficient compared to mini splits even before you account for leaving a giant uninsulated hole in your wall with free movement of air between the inside and the outside.

    I laugh every time I see one of these shoved in right below a brand new quadruple pane low-e argon filled latest ultra efficiency mega R value vinyl window. Yeah, the window is not where your air leak is, bro.



  • They couldn’t possibly make it any more garbage than it actually is.

    In the middle of an audio book in any media player but you connect to your car? Too bad! Android Auto is its own separate little world and your playlist position is different in the car vs. out of it.

    Someone sent you a text but ye gods forbid, they sent it before you started driving your car? Too bad! You can’t see past text messages, just the ones that were sent while you were driving. I guess if somebody texted you an address in advance you’ll have to fish your phone out of your pocket.

    Somebody’s calling you who is already in your address book. Too bad! We’ll only show the phone number on the screen and not their contact name.

    Etc., etc.

    Android Auto is basically useless. My car stereo supports both, so I just screen mirror if I actually care about functionality. I only use Android Auto itself when all I want is a map.


  • Which is indeed why the Imperial officers all wore Hugo Boss nazi uniforms.

    George Lucas did also say at one point that he based the red and green laser fire of the Imperial and Rebel forces on the tracers being fired by the US and Viet Cong, which was an iconic bit of imagery that was widely televised. Also:

    However, when Lucas sat down with director James Cameron in 2018, he revealed how the Empire was also meant to resemble America — particularly the way it prosecuted the Vietnam War. Cameron pointed out how the Rebels are a small group using asymmetric warfare against a highly organized Empire. Today, Cameron added, the Rebels would be called terrorists. “When I did it,” Lucas replied, “they were Viet Cong.”

    In other words, Lucas viewed the Vietnamese as the rebels and America as the invading villains. He further explained that Star Wars was a “vessel” in which to place his worldview that the United States had become an empire during the Vietnam War, doomed to fail like every empire before it. Cameron noted how those views carried over into the Star Wars prequel trilogy, especially in Padmé’s line, “This is how liberty dies, with thunderous applause.” Lucas replied, “We’re in the middle of it right now,” referring to the country’s political state.

    (Via.)



  • Yeah, like, first time?

    The presentation has changed slightly but the content is much the same. Back in the good old days I was a moderator on Totse forums (the original, but its web bulletin board incarnation and not when it was a BBS) and we literally had an entire subforum just titled “Bad Ideas.” This was where things got launched, torched, smoked, blown up, stolen, scammed, or otherwise mutilated. Or at the very least all of the above talked about, at length. All of this with an strong implicit suggestion to try it yourself. Most of the kiddos did not actually have the means to pull of what they claimed they did but the ones who could and more importantly had the means to prove it were celebrities. Usually only for a short time, for various reasons.

    The early Internet was basically just a repository for bickering about Star Trek, low grade porn, plans for how to build potato cannons, or schemes involving smoking dried banana peels. An immense amount of stupidity has always been there to be found, because the place was and is full of teenagers and teenagers are stupid.

    I sure was, when I was one.