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ROBOTICS: Does anyone actually tune object physics in sim, or do you just live with the defaults?

This story is from 2026-08-20. It is preserved in the archive; the latest stories are on the live feed.

Been poking at LIBERO and RoboCasa 3D sim assets and noticed almost every object's collision geometry is just a box, and they share the same density and friction values across the whole benchmark. Which surprised me, since a lot of manipulation -> OpenVLA and GR00T LeRobot seems like it'd depend on…

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  1. 2026-08-20 22:48 · r/reinforcementlearning
    ROBOTICS: Does anyone actually tune object physics in sim, or do you just live with the defaults?

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