√𝛂𝛋𝛆

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Joined 1 year ago
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Cake day: July 5th, 2025

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  • I do the shaky thing too, but I think it is just psychological tbh. At calorie crash levels of no blood sugar during extreme endurance sports, it is totally different. It is like someone straps lead weights all over your body. Everything feels heavy and nearly impossible to move.

    There is probably some kind of dynamic regarding different types of sugar in the system that cause the shakiness.

    Your brain ONLY works on sugars. So calorie crashing, like hitting the wall, is when your body has to start cannibalizing your own muscles for sugar to fuel the brain. I’ve never been anywhere near that level except on a bike after 4+ hours and 60+ miles. You feel like a puddle, and joints are like bending copper wire. There is no shakiness in that state.



  • Honestly, it is a bit of a noob design, and I do not mean that in any kind of negative or insulting way whatsoever. The main issue here is how you are thinking in terms of other materials and processes. Every product is primarily constrained by the manufacturing process. The design aesthetics are constrained by this process. The trick is to understand these constraints well enough to make something aesthetically pleasing within the process. To be fair, ~95% of designs shared and printed have this type of issue. Your design here looks like something I would make out of brass sheet and brazing. There is nothing fundamentally wrong with the approach. I see what you were trying to do.

    The floating thin sections on layers, lack the flow consistency to maintain temperature regulation of the heat block. The heater cartridge in the print head is managed by a PID control loop. This will always have some overshoot and undershoot of temperature when the flow changes substantially. There are a number of contributing factors to this issue in the printer hardware design. I could go into a lot of depth here but that is an aside.

    I would not use thin floating sections. Let’s say the whole backing was solid in a FreeCAD design body. I would then do something like an egg shaped ellipse pocket out of the middle. Another option might be a % like shape with the thinnest section offset so that the layer lines are still substantial.

    My most advance approach would be to print the face of the frame on the bed, and the rear face of the backing plate also on the bed as a second part. If designed well from the start, and if the bed is large enough, you design the print to finish the backing plate before the face is completed. Then you add a print pause, remove the backing plate, insert it into the front plate, and continue the print to encapsulate it as a single part. This makes any 2D pattern for the backplate possible, and you do not need to deal with fasteners or whatnot. You end up with a perfect picture frame slot using this method.

    A total aside, but this idea can also be used to make your own printed supports manually for perfect overhangs. You print the support to size, add a pause, and remove the printed support shape. Ideally, you add a ~0.1mm-0.2mm clearance gap, paying very close attention to how your slicer layers height and first layer correspond to the support dimensions, or rotate the support to utilize better x/y dimensional accuracy if possible in some designs. You can even create a printed alignment jig on the build plate just to hold this manually created print support. The trick is to then apply gluestick to the interface between the manually printed support and your overhang. This can produce nearly first layer like print quality on an overhang with dimensional accuracy too.

    Another super advanced trick: let’s think if the picture frame standing vertically upright in Cartesian planes. It is facing forward on the X-Z plane (X = -><- = >< = left to right). Let’s assume the origin 0,0,0 is properly centered in the frame. Now if we look at a X/Y Top, section view, we are looking at the picture frame as if someone had used a hacksaw in the middle of the sides of the frame. In other words, we are looking at the frame’s profile view. Now typically, people approach this like a [. Now this takes a lot of practice, but it is possible to design a profile something like ɭ̅̅̅ ̅ ̅˻ ̅ ̷̅ – the print bed is ↓. If you design this just right, the left side is the frame and the right is designed with a small connection to the bed and an angle where this connection is close to the rest of the frame. The thin bridge overhang is going to contract and shrink towards the larger heat mass of the frame, especially because of the printed layers above the bridge. This contracting force will be set into the part like a spring, but will remain compressed due to bed adhesion. You may want to add a small first layer connection or inner skirt to hold this section in place firmly throughout the print. When the part is removed from the bed, the bridge spring will pull the right section back. This will create the slot for your picture and potentially a way of holding other types of backing, while not worrying about conforming to other types of manufacturing process constraints like a wood router or sheet metal profile.

    Sorry if my lack of eloquence, verbosity, or tone come across negative at all. I wish to be encouraging and am just nerding out.


  • I was looking for the image to see if I saved it, but apparently not. There was a image floating around of a private meeting slide presentation that showed the various phones and their vulnerabilities. IIRC, the main things were some issue with the number of allowed log in attempts when all the mobile devices are in the initial boot lock versus regular lock state. The other was how the default USB behavior is handled in the locked state. These are default locked down in Graphene. Additionally, there are tools like a second lock screen password that factory resets the device completely in the background, and automatic reboots so that the phone goes into the initial boot locked state regularly.

    If they can’t get into the device, they will probably just steal it.





  • Anyone can detect any transmitted radio signals. The ARRL books explain how. I’m too lazy to go look at my copy to photograph the section of the physical book in my room. The frequency licensing is totally irrelevant here. That will just be changed and noise will get broadcast over the band. If you keep trying to transmit, someone will find you. You are literally creating a beacon in all directions that points at you. Everyone will be listening, but one by one there will be no one to listen to. This is standard stuff. Every military unit has radio counter measures. You are very limited in real output power already. The big boys will blow you away because they have no such restrictions. It is one of the reasons why there are power limits. Now if you can hide something useful and encrypted near the noise floor, that is one real possibility, but in this age of software defined radio, you are still going to get caught.




  • Meshtastic is still radio just the same. It is a transmitter and will get triangulated, but that is irrelevant to what I said. What I am talking about is how all radio devices you actually use are easily logged. Cell towers are one way, but the device is easy to log more locally. For instance most big retail stores are logging people in the door and their movements. Heck, it has been a few years since the papers about how people can be tracked based on changes and response times within WiFi coverage using standard consumer hardware. It would not surprise me if this is used by some now. The air tags nonsense, that is the same type of thing. The real reason you do not have removable batteries in mobile devices is so that you cannot turn them off. They are never fully off. That is how stuff like air tags still work. Stuff like Intel’s ME, AMD’s PSP, and ARM’s TrustZone are the systems that are used. It is a whole extra operating system running in the background on your hardware. These have a lower root level access to everything on your hardware. It is trivial to log signals from all mobile devices that pass a given point. It may still require some coordination to correlate cellular and video manually but I highly doubt that. In all likelihood, the current generation of hardware is already collecting this data. Look at all the stories of people getting caught a few days after crimes. That was unheard of 2 decades ago. Now it is practically a given. If you are in public and transmitting radio signals now, you are fucked. We would all need to dress up as Tusken Raiders to have any chance at anonymity now.