Do Expensive Filaments Make 3D Printed Wrenches Better?
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A comparative test of 18 different 3D printing filaments measured by printing identical wrenches and testing them to failure with a torque meter. PPA-CF (carbon fiber nylon) performed best at 4.3 nM, followed by continuous carbon fiber at 3.7 nM. Plain PLA surprisingly outperformed some carbon fiber blends, while TPU
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