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Kopsis

@ Kopsis @forum.guncadindex.com

Posts
3
Comments
142
Joined
4 mo. ago

  • Computer recommendations

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  • When bitlocker was enabled, you were given the option of saving a recovery key to your Microsoft account, a USB drive, or a printout. You may have missed it -- MS bombards you with so much "do you want to enable a free trial of X?" garbage on every upgrade that people get used to just clicking through as fast as they can to get it out of the way. If you didn't avail yourself of one of these options, getting around it is effectively impossible.

    As someone who has been using Linux since the 90s, my recommendation for new users is almost always Linux Mint ( https://linuxmint.com/ ). It's an easy GUI install, and their Installation Guide is well written and concise. Once installed, using it isn't that much different than using Windows. There's a Software Store app that will let you click-to-install most popular Linux desktop applications. System settings are managed through a "control panel" like app. File manager will feel familiar and you can have just about any major web browser you want.

    At some point you may have to learn about the "guts" of the OS, but just as you shouldn't need regedit on a new Windows install, you should get a perfectly usable LM system without ever dropping to the command-line.

  • Mirroring Reddit to Lemmy

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  • Philosophically, we shouldn't reward Reddit's bad behaviour by making it easier for people to stay there.

    Technically, a two way mirror is likely to get the Reddit subs banned. We don't have to walk on eggshells here, so it would be easier to slip up in mirrored posts. And a one way mirror would just draw people back into the Reddit tarpit.

  • OEM gen5 Glock 19x stp

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  • I'm not sure what you're really looking for? All printed Glock frames have to be designed to take one of the common rail designs (PY2A, FMDA, P80, etc.) or there's no way practical way to mount the slide.

  • Help: Light strikes. What could be changed?

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  • What are you building? The diagnosis will be very different for a parts kit pistol build and something fully DIY like the Decker.

  • pa6-cf20 vs pa6-cf12

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  • You can't make any conclusions just from the fill percentage. Differences in the polymer formulation will likely outweigh everything else. Given the exact same formulation, you would expect the CF20 to be stiffer, more brittle, and have worse layer adhesion. But it's never really apples to apples, so look at the TDS and independent test results.

  • Glock frame prints on a multi material printer

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  • With good support settings, orientation (rails up vs down) doesn't really matter as long as it's horizontal and not some weird angle. Rails up is less likely to have warping on the dust cover, rails down uses less support material (and is therefore a little faster).

    But you really don't need to do multi-material to get clean support removal. Tune your support settings and your cooling and you can get clean support removal without wasting a bunch of time and material. Here's one I printed a few days ago, rails-up, in 3D Fuel Tough Pro PLA+.

    I didn't do any clean-up other than just removing the supports. I could have probably gotten it even cleaner if I slowed the print down a bit, but this was only intended as a test mule.

  • Man Faces Machine Gun Charges for Owning a Forced Reset Trigger

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  • The United States agrees not to enforce [NFA and GCA statutes], or any similar statute or agency interpretation of 26 U.S.C. § 5845(b) under which an FRT is contended to be a “machinegun” or otherwise unlawful against any person or organization for possessing or transferring FRTs under the following two conditions ...

    With the conditions being a) the mode of operation, and b) not designed for use in handguns (whose definition is not the same as "pistol" in the GCA/NFA).

    This is tantamount to saying "we concede that some FRTs are legal" but there's no easy way to do that in a settlement. So they worded it in a way ("agrees not to enforce") that is actionable and contractually binding yet leaves the door open for them to go after handgun FRTs and other designs.

    But the SS meets all five enumerated technical requirements in condition "a" and therefore should be covered by the terms of the settlement (though the burden of proof would fall to the accused). It is valid to say that we never got a ruling that FRTs are constitutionally protected. But it's also valid to say that under the actual laws (not ATF "interpretations") that FRTs do not meet the legal definition of a machinegun and therefore nothing in those statutes prohibits them.

    An aside to Glock, TX22, and other handgun FRT makers/owners: BE CAREFUL! Those are not protected by the settlement. And though they should be legal per the GCA and NFA definitions of machinegun, there's currently nothing to stop the ATF from overstepping and dragging you through a costly protracted legal battle.

  • Man Faces Machine Gun Charges for Owning a Forced Reset Trigger

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  • Not sure which "legal crap" you're referring to, but FRTs do not meet the Federal definition of machine gun in the NFA or GCA. The ATF created an interpretation inconsistent with the actual law and they got it slapped down in the Rare Breed case.

    In the Rare Breed settlement the DOJ stipulates that the Rare Breed FRTs are not machine gun conversion devices. It's specific to the Rare Breed models, but it would be hard for them to successfully prosecute someone for a SS since it's fundamentally the same thing. Doesn't mean they won't try as a terror tactic.

    At the state level, several states explicitly outlaw FRTs, binaries, etc. That's a whole different can of worms.

  • Man Faces Machine Gun Charges for Owning a Forced Reset Trigger

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  • People should realize by now that you can't assume law enforcement has any technical understanding of firearms or the law. "Walks like a duck..." is enough for warrants and charges. And it doesn't have to stick to cause major damage to your life. Rolling the dice on the idea that local PD has read up on the Rare Breed settlement is not a smart bet.

  • PA6-CF vs PA6-GF - Impact Toughness vs Brittleness

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  • Compared to PLA+: 3 - 5x more expensive, much higher heat tolerance, somewhat lower stiffness, needs a 300+°C hot-end, prints best in an enclosure. Strength is comparable (there are differences but it's not dramatically better or worse).

    I don't use regular PLA for anything.

  • What should I build next?

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  • That's certainly a valid consideration. If you're not in a hurry, the new Decker is worth waiting for. But "soon" is probably still a couple months away.

    If you're enjoying your 22s, you might consider one of the Ruger 10/22 based designs. Bolt, barrel liner, FCG, and a mag will put you right around $200 and you can print everything else. My Galileo R2 build turned out good enough for local Rimfire Challenge matches.

  • What should I build next?

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  • Decker 380 if you want to move up to semi-auto centerfire while keeping things 100% DIY.

  • deAR22 SS problems please help

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  • It's common on AR22s to have to shim the slot in the cam to snug up the lever a little bit. The alternative is to tweak the geometry of the trip. Bore Buddy makes an adjustable trip for that exact reason.

  • PPA-CF vs PA6-CF?

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  • That's true for every filament. None of the PA6 is just PA6. Same for PLA. PETG can vary wildly in how much glycol gets replaced. The list goes on. But in all those cases, the name accurately identifies the base chemistry. That is in stark contrast to the name PAHT which doesn't even give you that much.

  • DIY 2G cellular

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  • Odds of dial-up working when cellular doesn't are low. After hurricane Maria in Puerto Rico, cell service came back in most places before landlines. That dial-tone no longer means connectivity to a telephone switch. Analog calls are digitized and carried on the same high-speed long-haul digital networks as everything else. The only thing in POTS that's still analog is the "last mile" wiring from the phone jack to the nearest mux.

    The best disaster preparedness is to assume a complete loss of internet access. Read some of the stories of people trying to keep data centers running in New Orleans after Katrina and you'll see why in a large scale disaster, the data centers will be down within days and connectivity won't matter. Scrap the old modems and get a HAM radio for comms and an "Internet in a Box" (https://internet-in-a-box.org/) - or similar setup - for off-line information/entertainment access.

  • PPA-CF vs PA6-CF?

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  • PPA is the abreviation for polyphthalamide - not a marketing name. Though there are variations (just like polyamide), the 6 carbon (same basic structure as PA6) is the only one I've seen used in consumer filament.

  • PA6-CF vs PA6-GF - Impact Toughness vs Brittleness

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  • The differences between CF and GF reinforced PA-6 (within the same brand) are relatively small. Most testing I've seen shows the GF versions to be slightly weaker, but you could likely see just as much performance difference due to ordinary variables (room temperature for your printer, exact moisture content at time of printing, etc.).

  • Any Research on New Materials

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  • There can be a lot of performance variation across brands which makes generalization really difficult. But when it comes to PLA-CF, the primary thing it's gaining (stiffness) is the one thing that PLA doesn't really need. If you're going to try to anneal it, the CF can really help with dimensional stability. Otherwise, you can almost always find a higher performing non-reinforced version.

    As for PETG-CF, it still suffers from extremely low impact strength. That's just an inherent property of PETG and adding CF usually makes it worse. That doesn't mean it's not usable. In fact, there's a video of Middleton shooting a 500 Beowulf upper on a GAP lower printed in PETG-CF. But that's a case of really knowing your performance requirements (the GAP has a bolt-on metal buffer tower) and how to dial in your print settings to get the most out of the material. Most people aren't at that level, and that's the main reason why you see experienced folks playing it safe with recommendations.

  • Any Research on New Materials

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  • I went through 2kg of 72D TPU testing it in several different designs. You can find my report on Odysee, but the tldr; is it didn't work - even with design changes. I'm now exploring the capabilities of PCTG (with much better results).

    But the bottom line is that some materials have limitations that you just can't design around. PETG, PC, and artistic PLA are always going to be poor choices for most functional firearms parts.