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I won't even ask why you need this and I assume you've done your homework about the issues. 3D printed gears are notorious for failing even when designed well, so the idea in general should be pretty doable. TPU would be a terrible choice for a number of reasons. It's flexible which would make it a bad gear to begin with, but it is also very very tough. So ...


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deliberate/planned obsolescence is the term you look for If you design parts that break after some time, you plan their obsolescence. That you do by a deliberate choice of material and working conditions. Designing a part that will break after a certain time can be done by choosing the correct stresses that will make your chosen material break. In a gear ...


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have been used quite a lot for the past three years The problem, even if belts and such seem ok, might be that other parts start to wear out. The part that contributes te most to ringing is the motion system. Grooves in rails or worn out bearings are a classic way that introduces some freedom in the system that can result in rattle and ringing. A photo of ...


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