Collision Mesh Issue

[Micros]

So currently I've made a rough draft of a metal detector and I'm having issues with through the middle of the detector. If am not mistaken it's due to the collision mesh and I'm curious on how I can edit it or fix it so that I am able to walk through the middle of my metal detector.

[T]http://sharex.sacredservers.com/src/5g5Q4p.png[/T]

[Rubat]

Pretty sure you must give your physics mesh a $concave flag in the .qc.

[Micros]

[QUOTE=Robotboy655;49492213]Pretty sure you must give your physics mesh a $concave flag in the .qc.[/QUOTE]

Mind giving me an example or more insight on that?

[Braade]

Like this:
$collisionmodel "<phys model name.smd>" { [I]$concave[/I] }