So.. I want some of the rail risers from the mining models in a payload map I'm making. But the rail models don't have collision meshes, so they don't collide with the player. I want the players to be able to move on top of them, and I want their footsteps to sound like they're walking on wood. I've figured out to use playerclip volumes to allow the players to move on them. But is there a way to make their footprints sound like their walking on wooden models? Aside from just putting another brush with a wood texture on it under the tracks?