• 2 Posts
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Joined 2 years ago
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Cake day: August 15th, 2023

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  • I agree with the comments on this forum (https://www.thehighroad.org/index.php?threads/mushrooming-22-lr-case-heritage-rough-rider.891807/) that the cylinder could have a machining defect. (Basically a headspace issue, also but kinda not. The cartridges are sitting too deep in the cylinder itself.)

    If there is room for the brass to get pushed back far enough for it to mushroom out, something is seriously wrong. The issue could manifest from a machining error as small as 5-10 thou, I am speculating.

    My first thought was excessive chamber pressure, but the bulging would be much worse around and behind the rim itself if that were the case.

    The bullet and the brass get pushed in opposite directions and if the brass can move, it will move before it deforms. If it deforms, it’ll deform at the weakest spot first, like we see in your pic. (Excessive chamber pressure tends to expand the brass and lock it in place. With center-fire, it’ll blow the primers out or have a hole punched in them from the firing pin first. With rim fire, the pressure pushes back on the rim.)

    Also, check for excessive slop with the cylinder. If it can move forwards and backwards too much, that could also telling of issues with other parts of the gun. (Like I mentioned before, it doesn’t take much for a gun to be out of spec enough to cause issues with brass.)


  • Apps are somewhat buggy right now. My shokz will partially disconnect after the first song and exercise audibles are non-existent. (The audio mutes, but the watch still responds to play/pause button presses. This could be just an issue with the shokz app being confused for the time being.)

    No difference in GPS connect time from the pixel watch 3, which has been historically buggy at times.

    But yeah, random glitches all over the place. It’s tolerable enough and would expect app updates to fix most of them.








  • (The correctly used double negative was confusing for me at first, btw.)

    You make a very interesting point I haven’t ever thought about before.

    While I have always considered myself a patriot to a mild degree, I never associated it with tribalism directly. Even with the many faults of all countries, it’s OK to be proud of where you are from. (It does make perfect sense that tribalism is the end goal of state sponsored patriotism though.)

    In my mind, the fine line after patriotism was usually nationalism where tribalism runs deep and hate-based rhetoric becomes extremely effective. The definition of a patriot is somewhat twisted at that point. (ie: unless you believe [insert something random], you aren’t actually a patriot and therefore an enemy of the state.)

    I am not agreeing or disagreeing with you, btw. Your perspective is something interesting to think about, s’all. (I am leaning on the agreement side, FWIW.)

    (For the people reading this that may not realize that I am using the word “nationalism” in a negative context, I am. If that chaps your hide still, replace it with ‘christian nationalism’ or ‘white nationalism’ and fuck off. Everyone else, sorry for the disclaimer.)







  • You could probably map resonance artifacts, but you have to isolate layers that were printed at the same speed and direction. However, the second you tighten a belt or screw, that pattern will change and I am not sure how consistent resonance patterns would be on a bed slinger. (The quantity and density of printed plastic may change the resonant characteristics of the entire printer. This may be less of an issue on a core xy.)

    Thinking waaay outside the box… In some cases, I have seen extruder gear marks on the filament create artifacts on a print. Every gear pattern should be unique, but measurable differences would probably be micron or sub-micron.

    Maybe you could map the surface of textured beds as I seriously doubt that those patterns would be consistent and more prone to randomness from the factory.

    There are a ton of conditions that could generate unique artifacts on a print, now that I think of it. Hell, even a printers PID tuning can leave visible and repeatable errors.




  • Pin pitch is pin size and/or spacing. With physical plugs, you start to hit limitations with how small the wires can get while still being durable enough to withstand plugging/unplugging hundreds of times.

    Drop losses. (I am keeping this at an ELI5 [more like ELI15, TBH] level and ignore some important stuff) Every electronic component generates heat from the power it uses. More power used usually means more heat. Heat requires physical space and lots of material to dissipate correctly. Depending on the materials used to “sink” (move; direct; channel) heat, you may need a significant amount of material to dissipate the heat correctly. So, you can use more efficient materials to reduce the amount of power that is converted to heat or improve how heat is transferred away from the component. (If you are starting to sense that there is a heat/power feedback loop here, it’s because there can be.) Since a bit of power is converted to heat, you can increase the power to your device to compensate but this, in turn, generates more heat that must be dissipated.

    In short, if your device runs on 9v and draws a ton of power, you need to calculate how much of that power is going to be wasted as heat. You can Google Ohms Law if you would like, but you can usually measure a “voltage drop” across any component. A resistor, which resists electrical current, will “drop” voltage in a circuit because some of the current (measured in amperage) is converted to heat.

    I kinda smashed a few things together related to efficiency and thermodynamics in a couple of paragraphs, but I think I coved the basics. (I cropped a ton of stuff about ohms law and why that is important, as well as how/where heat is important enough to worry about. Long story short: heat bad)