Rigid body not colliding with box collider.

I have a piece of a model (an ax), which I have added a rigid body to. Using a script, I copy that game object, and hurl it forward by applying forces. This works great.

The problem is that collision is not happening. I have a box collider, which is used as the ground. When the ax hits the ground, it passes right through the ground. I have tried setting the ax to continuous dynamic collision detection mode, but the ax still passes right through the box collider (ground).

Any ideas what might be going on here?

Your axes don’t have colliders on them :stuck_out_tongue: Add a box collider component to their prefab (or programmatically, if that’s how you’ve been instantiating them).