How to stop constraints exploding

1st. Check that a simple collision is set up.

2nd. The very weakly visible coordinate systems of a constraint have to be exactly aligned to the limit coordinate system to null it. In other words, a simple ‘A constraint is starting outside of it`s limits’ would have reduced the time the physics system ate humanities lifetime significantly. As well as the tooltips. F.i. the 2nd (blue colored) Bone is the Parent and the 1st (red colored) is the Child.

  • Use ALT and Ctrl to Position the Constraint Reference Frames. Try ‘Snap’ or ‘Reset’.
  • Use Alt+Shift+Enter to check single components on desired functionality. The constriants should work properly in Simulate.
  • Activate Show Mass Properties, Show Bones to see if the correct bones are used
  • Rigging and bone scales from Blender might be an issue (as discussed here)
  • Do not use extreme values, the constraints are very sensitive
  • I tried to lower the collision depenetration velocity from 1000 to 500 in the project settings, which doesn’t feel bad right now

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