A Reddit Refugee. Zero ragrets.

Engineer, permanent pirate, lover of all things mechanical and on wheels

moved here from lemmy.one because there are no active admins on that instance.

  • 10 Posts
  • 109 Comments
Joined 1 year ago
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Cake day: December 22nd, 2023

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  • “Yes” with the asterisk that there is no phase change, and the flow paths are segregated.

    In a heat pipe, water is installed such that it is kept near it’s liquid-gas phase change point on the pressure-temperature curve. When heated, it turns to “steam”, travels thru the center of the pipe, condenses back to liquid on the cold/fins side (giving off all it’s heat), then returns via capillary action on the metal foam walls of the pipe.

    In a thermosiphon, the water never leaves the liquid phase. It simply relies on the density change based on temperature (hot water becomes less dense, and will rise to the top of a column) to force some circulation to occur. The hot fluid rises out of the heatsink and displaces the cooled water in the radiator, which then flows down the other side to return to the heatsink.

    Very old cars (<1920) used to rely entirely upon the thermosiphon effect, rather than a pump.
    It’s not terribly efficient, especially at higher dissipated power densities. They are also very prone to being overloaded with heat, if the overall loop temperature gets too high and/or the radiator loses some efficiency (e.g clogged with dust), the water can start to boil on the hot plate side and you’ll lose basically all cooling effect when your siphon is blocked with steam.





  • The point is not that it is being used, the point is that corporations must protect their trademarks or else they may lose the exclusive rights to them. Intel also still uses the “Core” branding on their modern CPU’s so it wouldn’t be a stretch for them to try and continue legally protecting “Core 2 Duo” under the guise of retaining the “Core” part of their trademarks.




  • Bigger hammer and a concrete surface. Three good whacks to the thin sheet metal casing (opposite the drive motor/PCB) should shatter the platters inside.
    You can also buy a sharp punch that looks like this and punch thru the sheetmetal side to really get those platters broke.

    Realistically if they’re already failed, nobody is going through the effort to send these disks through any kind of speciality recovery for a random john q public anyway.


  • Any normal computer can become a “server”, its all based on the software.
    Most enterprise server hardware is expensive because its designed around demanding workloads where uptime and redundancy is important. For a goober wanting to start a Minecraft and Jellyfin server, any old PC will work.
    For home labbers office PC’s is the best way to do it. I have two machines right now that are repurposed office machines. They usually work well as office machines generally focus on having a decent CPU and plenty of memory without wasting money on a high end GPU, and can be had used for very cheap (or even free if you make friends that work in IT). And unless you’re running a lot of game servers or want a 4k streaming box, even a mediocre PC from 2012 is powerful enough to do a lot of stuff on.








  • IMO having the ability to do TPU is way more versatile than going to another rigid structural filament.
    ABS/ASA is just “pla but more impact resistant”.
    TPU is “haha funny squishy wait this turns into a living hinge?” and opens up a TON of print opportunities.
    I had a lot more fun trying out TPU (both high and low durometers) than switching to any other kind of filament. Whatever you print basically becomes shockproof l, is squishy/bendy, and you can chuck it across a room full-force with no problems. Super fun.

    However, TPU is happiest with a direct drive extruder. High durometer (95a) TPU’s are fine, but not optimal, in bowden extruders, while low durometer (Ninjaflex) straight up won’t print right thru a bowden. So keep your type of printer in mind when shopping for spools of test filament.