𞋴𝛂𝛋𝛆

  • 168 Posts
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Joined 2 years ago
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Cake day: June 9th, 2023

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  • Figured out some CAD stuff yesterday that has been bugging me for two weeks. I should have a printable model tomorrow or the day after.

    Trying to make stuff nicer than a simple rectangular box can be hard to do right. I had never tried mentally inverting my spaces in CAD and modeling all complex voids between shells as objects too, but that allows me to navigate more complexity now. Basically I discovered I can do a bunch of operations, then merge objects up tree at an earlier point in history to apply all of the later operations to both objects in useful ways.

    It was surprisingly challenging to think about a hollow rectangular hourglass inside an oval at the waist of the hourglass, and then how wires, connectors, and a circuit board cross between the asymmetric voids in the center. It is not just hollow spaces to pocket out. I need print orientation based mounts and clips that grow from all faces in different directions because it is all one monolithic print and I never use printed supports.

    It is a silly thing to describe, and to do, but it is my silly thing.




  • Love the idea, unfortunately it relies on cdn.jsdelivr.net to work so I won’t use it. It also is trying to access the server: analytics.eu.umami.is to view. I can see the 3dprint.social website, but not any images. I personally never use a website that requires a 3rd party connection to any server that could be accessed by other websites. The standardization of this practice is none of my concern, but it is wrong on many levels of ethics and big picture politics that ultimately impact democracy. Specifically, I may decide to trust your server, but I will never give you agency, real or potential, over me and implicitly trust others as a result of that relationship. Anyways, that is my personal choice, speaking as a user, but as a Mod: also why I’m not going to directly promote this site as it is configured currently. This is no different than my stance on Printables or Thingiverse.





  • We probably need to also get more of us actually uploading to peertube and posting stuff here with better integration.

    First step is streamlining account creation and uploading. Is there a post goto for how to sign up? What servers are stable versus maybe not so much? Really useful video content is a major undertaking for technically useful stuff. I did several on YT in the past and some in the hundreds of thousands of views about how to fix or hack stuff where I was the only source posted. Editing something well is at least 1 hour per minute, and twice that with a good setup and recording. So like, I’d be far more bummed if that stuff got lost by instances disappearing. That is probably the biggest hesitation I have had. IMO, useful original content is the holy grail for this kind of thing, or maybe that is just my perspective bias.






  • You will find this on many high end ultra fast printers. The compressor makes a lot more noise than a fan.

    The Prusa MK3S+ duct is probably the best blower fan design for part cooling. The duct only barely enters the path of the exit from the blower unless the print head is on a flat surface that causes back pressure at the exit. Only then does the air get redirected through the duct in a useful way to get better coverage behind the nozzle.

    I took this design and made it snap fit over the end of a blower instead of mounting it to the extruder print head. So I got to know it well.

    If you know about the Reynolds number and how length and surface texture impact flow, almost all ducts and fans used in hobby printers are indeed garbage.

    Water cooling is so cheap now, we should probably be using it for the extruder. I think the issue with small compressors is duty cycle. Like the ones for refrigerators is super quite but they have a low duty cycle time.



  • Plasma sputtering is hard. I have a good vacuum pump but it is still not in this class of stuff and while I’m good at electronics, that is a project that is beyond my skills experience scope. I’m maybe more capable of the surface stuff as I come from automotive class paint perfection. While nowhere near optical precision, I have defeated myself, in that I can apply any amount of tedium required to get the job right despite the emotional toll it takes to get results.



  • Actually, after trimming the excess material top and bottom and stretching the fabric more… it is fiddley and I could certainly improve upon it, but I’m building my water cooler laptop GPU setup into my laptop bed stand and not primarily trying to make air filters. This is just a filter to go into a centrifugal fan based airbox, so I’m going with it for now. I’d rather spend time modeling and integrating some other stuff into the laptop stand like some studio monitor quality sound and better tabletop mounting brackets.



  • Trauma is a tough thing to deal with. I hope you find peace and happier times. I have to throw myself into projects and do my best to block out the thoughts. The anniversary of the crash that disabled me has been hard for the last few years. The 10 year, was the worst though. I hope your life is less impacted than being forced to lay in bed most of your days.

    Other people’s problems certainly do not make your own any better, but it can add perspective, like if they can do x, y, or z, than I might be able to do this other thing.

    Anyways, condolences on your interpersonal loss and feelings of difficulty - from a random digital neighbor that cares to share a few words. Exercise is the easiest form of accessible endorphins and a path out of depression.