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Cake day: June 9th, 2023

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  • j4k3@lemmy.worldtoLemmy.World Announcements@lemmy.worldLooking for new Site Admins
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    15 hours ago

    I’ve been pushing positivity since the beginning before the first 1.5k joined this server. https://lemmy.world/post/36032

    I would do it, and have the time, but I don’t think you guys meet my requirements to make it manageable. I don’t use proprietary software, and use a whitelist firewall with addresses I know and trust, like this server. While I can spin up a secondary network or even a Windows machine, I do not care to do so at all, and certainly not regularly. However, I’m basically at a computer all the time anyways.

    What’s up with the haters? Me, or something I said?



  • What do you think it would take to make this vote tally thing automated by a bot? Like ideally one could set up the whole thing to tally, send a few direct messages around and fall back to defaults if there is no reply set within a given amount of time. I’m not criticising anyone here. From my perspective after hosting once, the whole tally and generation of the next challenge is a bit of a drag where automaton and routine would help improve participation IMO.


  • Invisibly; by trying to post in it and encourage others to do so. There is not much management to do with such a small community. The majority of regular users watch the All feed, so subscriptions are really just a way to bookmark the community to post in it or find it more easily. For smaller or new communities, expect it to be more like your personal blog as it is unlikely to be something others will post in regularly. The majority of communities that are hourly-active were made prior to the rexodus of June 2023, or within a few weeks thereafter.

    Unless you’re in a very controversial space, actively micromanaging a community is likely an issue with the mod not the community IMO. The admins take care of the majority of wack-a-mole nonsense here.


  • How are finishes so durable and thin?

    My assumption of a lack of post processes is because I come from a background of automotive refinishing and repair, where I’ve owned a shop and painted for many years along with getting into custom art graphics and airbrushing. The only finishes I know of that provide a similar durability are two part urethanes. Those are far too thick by comparison. When cutting into plastics that have been moulded, the finish shows no signs of mechanical layering or bonding like a post process finish in most cases. Often a cleanly broken or cut part shows a similar type of penetrating surface alteration I associate with a polishing operation, where the surface transitions in color and grain structure with in millimeter or few (in cases where the break is clean and does not appear to be influenced by stress alterations like ABS where it whitens under tension).

    How does chromate conversion work with a prep regime and what kind of wet paint can offer similar durability to a 2k urethane when it is impossibly thin? Like I know the limitations of urethane well when it comes to corners and pointy bits where it will thin from surface tension. There is not a chance in hell that the buttons on the side of my phone could be painted with such a finish with an even conformal coating and remain durable for years of constant abrasion. Is there a name for this class and type of finish? Where are they sourced? What is the scale of the industry? Is there a way to access the process and products at a small scale?



  • I’m using principles of 'close enough. I almost exclusively use the Part Design WB.

    Technically I should probably model this in Blender. I know Blender has a way to wrap and unwrap like I hinted. This post was really a fishing attempt to see if anyone here knew of a way to do the same thing in freecad.

    To model this, the first trick is to pick the best origin point. I’m using the screw pivots where the arms fold to hold my X-axis. The inside face of the lens is 146.6mm in diameter and is my primary reference surface for the lens. The shape of the lens is all done by creating sets of 2 sketches that are only used for references. These references are only used to attach a datum plane. The datum planes hold the sketches that pad and pocket the solid shape.

    If I really wanted to make this better I could do so by making more complex sweeps while only building the part with reference to the outside face of the lens, because it is not a perfectly circular dimension. After the surface features are complete for this face, I could use the defeaturing add-on workbench to extract just the outside face from the PD body. With this face by itself, I could create a filled offset in the Part workbench. Then I would be able to cut the circular inside diameter from the X/Y axis to rebuild the 146.6 mm inner face.

    In my experience that tree would have around a 50/50 chance of failing if I tried it. The task would cone down to how well the offset in the Part workbench is calculated. Even with this entire setup, I would not be able to control things like a varied edge finish on different parts of the lens so that I could model the mechanical properties better. I’m not super worried about the surface in freecad because I will need to sand and polish the print anyways.

    Thanks though. Hopefully you can follow the explanation. When I started with freecad years ago, I might have tried something like the draft WB but almost everything belongs in a Part Design workflow. It is simply a matter of knowing how to pick good references, setting your origin well, avoiding referencing off of π as much as possible, and NEVER importing edges or points from 3d geometry.



  • They told us they were going to invest in EV R&D back in 2014. You know, back before we had that orange anal experience of a Russian puppet wannabe pornstar felon president. We put 6b into GM to compete; they pumped their stocks with it. Such is 3rd world America. Lay off the McCarthy bullshit whining about investing in R&D to mask corruption and ineptitude. This was no fucking surprise. Spinning this bullshit is just trying to justify screwing over average Americans with overpriced undeveloped bloated unaffordable garbage made to pad our useless incompetent oligarchy’s pockets.



  • None of them have. Like the Trinity was invented at the first ecumenical council of Nicaea over 300 years after the stories of the gospels. The word and concept have no biblical basis whatsoever. So even back before the biblical canon was finalized they weren’t reading it and made it up as they went.