Ah, yeah, the forks collide with dynamic objects, but not the world itself that is made up of static objects. I should have elaborated. So you can’t run into a wall with the forks, they pass right through the wall unless the wall itself is a physics object.
The collision will be a bit off, there are tweaks that can be done inside of PHaT to make the collision smoother. Also, you can create custom physical materials to define their friction etc which helps.