Add collision to hands (UE4)

[Kilrog]

We started experimenting with picking up balls using the grab function and it works great, however, we only draw debug spheres for the hand positions. That means there is no real functionality in the hands except for the custom grab and throw we made.
We have seen several examples of hands knocking over cans or cubes etc. like this: https://www.youtube.com/watch?feature=player_detailpage&v=vYFqr2weXuA
So we wonder how the general idea is behind this, is it some mesh attached to the hands, or the bones-class being used? There is not much documentation on these matters. Of course there is the possibility of setting a sphere (example) at the hands location which has collision embedded in it, but it's a rather clunky and un-neccesary approach. Any help is appreciated.

[Joe_Ward]

Generally people use standard physics-enabled objects. In Unity, this is a separate Rigid Body; In Unreal an Actor with physics and collisions enabled, I think Unreal uses the existing meshes of the Actor object. (I haven't used Unreal much, so there may be multiple was to do this.) Of course, once you add collisions to hands, this makes picking things up by grabbing tricky as the collision physics push the object away at the same time you are trying to grab it. It can be done with care, but is difficult to do really, really well.

[Kilrog]

Thanks Joe, we will try, more suggestions or detailed explanations are still welcome!