I once met a person that never drank water, only soft drinks. It’s not the unhealthiness of this that disturbed me, but the fact they did it without the requisite paperwork.

Unlike those disorganised people I have a formal waiver. I primarily drink steam and crushed glaciers.

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Cake day: June 14th, 2023

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  • WaterWaiver@aussie.zonetoMemes@lemmy.mlmmmm tasty carbon
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    4 months ago

    I swear that I read that white lead oxide is water soluble, thus happily sticks to your fingers and then gets on your food. I must be misremembering.

    Maybe it was something about the solid lead object turning into an (oxide) powder that can then be easily ported as tiny particles on greasy hands? Hearsay science and safety information from me today :)


  • WaterWaiver@aussie.zonetoMemes@lemmy.mlmmmm tasty carbon
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    4 months ago

    The fun thing about Pb is it’s relatively safe in pure form. Unfortunately the oxides that appear on its surface are water soluble and love entering our bodies.

    Just looked this up, apparently I’m completely wrong. Maybe I was thinking about lipid compatibility? Not sure now.



  • Bleepingcomputer’s title and article are very misleading, the presentation did NOT reveal a backdoor into an ESP32. It looks like Bleepingcomputer completely misunderstood what was presented (EDIT: and tarlogic isn’t helping with the first sentence on their site).

    Instead the presentation was about using an ESP32 as a tool to attack other devices. Additionally they discovered some undocumented commands that you can send from the ESP32 processor to the ESP32 radio peripheral that let you take control of it and potentially send some extra forms of traffic that could be useful. They did NOT present anything about the ESP32 bluetooth radio being externally attackable.

    Another perspective that might help: imagine you have a cheap bluetooth chipset that is open source and well documented. That would give you more than what the presentation just found. Would Bleepingcomputer then be reporting it’s a backdoor threatening millions of devices?
















  • Lawful good: Please don’t use 8P8C for anything other than 10/100/1000BASE* compatible protocols, especially on network devices. It’s confusing.
    Chaotic good: Please don’t use ethernet cable for anything other than ethernet compatible protocols, especially on ethernet devices.
    Lawful evil: That’s a valid use of Cat5 cable.
    Chaotic evil: Let’s talk about RS-485

    True neutral: Wires are just wires and standards are just standards. In a parallel dimensions, somewhere, cat5 is used for 8-phase delta mains power.


  • WaterWaiver@aussie.zoneto3DPrinting@lemmy.worldLines in prints
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    1 year ago

    Sorry for the late reply, tied up. Thankyou for the photos.

    The Z-axis leadscrews look OK in the photos (nothing obviously wrong). That’s a very clean and new printer.

    Q1. Is there any grease on those Z-axis leadscrews (tall metal spiral rods) or are they completely dry?

    Q2. If you force your printer to move up and down does it make unusual noises at some parts of its travel height? You can try typing thing g-code into your printer monitor software to make it move up and down:

    G0 Z100 F1000   (move to Z position 100mm.  You won't actually travel at 1000mm/minute, instead the printer will do whatever it's max is)
    G0 Z0 F1000    (move to Z position 0mm, ie nozzle touching the bed)
    

    You may need to home the axes first (G28)

    Q3. Are these screws on both sides properly tight? I think I might possibly see a gap under one, but it could also be an optical illusion from reflections.