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Progenitor of the Weird Knife Wednesday feature column. Is “column” the right word? Anyway, apparently I also coined the Very Specific Object nomenclature now sporadically used in the 3D printing community. Yeah, that was me. This must be how Cory Doctorow feels all the time these days.

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Joined 3 years ago
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Cake day: July 20th, 2023

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  • That won’t save you anymore. My boss bought a smallish smart TV in contravention of my explicit instructions for use as a CCTV monitor because it was “cheap.” It nags you on power up with a popup whining about not being able to access the internet, and if you don’t feed it your Wifi password it will subsequently display that same popup every 30 minutes or so requiring you to dismiss it again. And again. And again. Apparently the play is to just annoy you into caving and letting it access your network.

    Instead I packed it up and returned it. Fuck that.





  • FWIW, FreeCAD does not use the GPU for geometry calculation at all. That’s done purely in software and insofar as I’m aware it’s not even multithreaded. Your GPU is only used in any capacity for final display, i.e. spinning the already calculated model(s) around in the preview window which it does via OpenGL. Otherwise it’s all CPU.

    Spinning a complicated model around at 244 FPS (my monitor’s maximum display frequency) makes my GPU peak at all of… around 3.5%. Doing a total recalculation on said model or changing a feature on it spikes CPU load momentarily but doesn’t register on GPU usage at all. Doing the same on my laptop which instead has the usual early-gen Intel Graphics Decelerator in it doesn’t provide much of anything different in the speed and usability department. OP’s problem therefore surely lies elsewhere.








  • From TFA:

    Manufacturers may comply through three methods specified in Section 6(2) of the bill: integration of the algorithm in the printer’s firmware, integration in preprint software, or a handshake authentication design between software and printer.

    Nobody’s going to do this in the printer itself; the spyware will be built into the slicer.

    Ultimately this will be trivially easy to defeat no matter what moronic legislators who possess no technical knowledge think. The real dangers are more subtle, not least of which being the chilling effect if this passes effectively instructing all 3D printer manufacturers not to sell anything in Washington state since total compliance as the bill proposes is indeed effectively impossible, and the penalties for presumed lack of compliance are high. The most realistic outcome for a private individual vis-a-vis potentially printing a ghost gun is not necessarily having their printer tattle on them, but the state having yet another byzantine felony they can charge people with if they get caught after the fact with whatever-it-is they have. Never mind the 1st and 2nd amendments, the only realistic avenue for enforcement of this on private individuals will run afoul of the 4th.


  • VR never needed Meta. Us nerds have been trumpeting this fact since before the first Quest even launched and for some reason everyone insisted on relentlessly bickering with us about it tooth-and-nail rather than accepting the simple reality that Zuck Zuck would continue to burn money on his silly venture with creepy knockoff Miis that nobody wants until he finally lost interest and gave up. And no part of that process would result in Meta becoming the “savior” that revolutionizes VR.

    Well, here we are. Where’s my fucking gold star already? My message has been consistent on this since about 2016.




  • I’m in agreement with the others. This is a printer issue, not a model design issue. Any current printer in good working order and running non-insane settings should be able to print a 90 degree inside corner like that with no problem.

    Some possibilities:

    Your Z offset may be set too high, so that your first layer height is too tall. This will result in the first layer’s extrusions not sticking to the bed and each other, peeling off in strings like you see here.

    Flip this over and show us the bottom of it. The effects of a too-high first layer should be readily apparent. That’s where my money is.

    Your printer may also be attempting to round the corners too fast. You could slow down your print speed, or adjust your linear advance settings. If you are using Prusaslicer or a derivative thereof (Orca, Qidi, etc.) there are built-in calibration prints you can run that will provide you a range of values to inspect my physically printing them, and allowing you to choose from the value that produces the best looking result. Ideally your linear advance/pressure advance setting should be tuned for each spool of filament, but in reality most people (myself included) don’t bother until they observe an issue. I use the same settings for all PLA, and a different set of settings for all PETG, and another for ABS, etc.