How to make a box acts like a box collider

Question

I'm working on a game project using Unity 5 and I have created some buildings with Building Generator v0.7 plugin in 3Ds Max and then I inserted them into Unity but the problem comes from where I wanted to add Box Collider. Basically my computer couldn't handle the process because it does not a powerful system so I decided to add Box Collider using a box (3d object)! So here's an image of my building:

And here's the box that I wrapped around the building as Collider:

So my question is how to make this box acts like a collider so the box would'nt be visible but it does what it's supposed to do...

I really appreciate if you know how to solve this problem ,thanks in advance.

Answer 1

So my question is how to make this box acts like a collider so the box would'nt be visible but it does what it's supposed to do.

Simply disable Mesh Renderer on the cube. The collider will still be functional if Mesh Renderer is disabled. You can always re-enable it, use its visual to resize your Collider, then disable it again. If you think you will never need to see that cube again, then remove the Mesh Renderer entirely.