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

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  • Anyone have shortcuts for modeling complex over center, compliance mechanisms, and bistable auxetic materials? I’m using FreeCAD and trying to just use rough sketches and trial and error to create a bending tube structure that 3d prints vertically but then bends into place like a pop-tube kid’s toy, but only on one side of an otherwise vase mode print design. I’m really pushing the limits of what FreeCAD can loft before edges go wonky and the Part Design workflow is no longer sufficient. I can make a compliant spring easily, but a bistable bend in a tube is at the edge of my learning curve.



  • Xi openly said and made no secret that China was investing in RESEACH and DEVELOPMENT in 2014. There was no surprise. It isn’t due to Chinese subsidies either. It is simply R&D instead of corporate criminals fluffing quarterly earnings with absolutely no commitment to even the company itself, and certainly not customers, neighbors, country, the world ecosystem, or humanity as a species. The USA gave GM 6 billion dollars for EV R&D in 2017. The corporate criminals used it to do a stock buy back to fluff their short term earnings. We should not be getting punished with tariffs to subsidize criminals. Let these shits fail and fall apart first. Then build something new from the ashes. Their inability to fail is the primary reason that they are failing. We really do need a league of c-sweet assassin heroes, or a dark knight of the real Gotham.