Convex mesh collider shape

Question

I want to use a flat 3d circle in my game. I need circle collider in 3D, but it doesn't exist in unity. I created circle with 500 vertices and added mesh collider. If I don't check convex it looks correct. With convex it changes to box collider. How can I make a circle collider?

Answer 1

You can create a Cylinder in a 3D modeling program like Blender with a very small height.

Export it as a FBX to Unity and then apply a mesh collider to it, next hide the object by removing the Mesh Renderer making it invisible leaving only the collider.