# How to get good collision **URL:** \ **Category:** World Creation\ **Tags:** sphere-collision, unreal-engine, Physics, collision-responses, Collision, question\ **Created:** [September 14, 2020, 6:40am UTC](https://forums.unrealengine.com/t/how-to-get-good-collision/471210 "2020-09-14T06:40:47Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Mattrox09](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Mattrox09](https://forums.unrealengine.com/u/Mattrox09)\ **Post date:** [September 14, 2020, 6:40am UTC](https://forums.unrealengine.com/t/how-to-get-good-collision/471210/1 "2020-09-14T06:40:47Z")
Hi everyone, this may not seem very question worthy, but here goes. I’m working on a game where the entire bulk of the map is this roulette wheel mesh. As such, I need the collision to be perfect. Is there a good way to get collisions for a mesh this odd, or will I just have to painstakingly make a lot of box colliders? I have already tried auto convex with maximum detail, and it still had some holes that the player could fall through. Thanks! ![313262-capture.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/6/5/365c24d69332bdc16ab3c84b3b1bee7ee1f17280.png) ---
**Author:** ![chrudimer](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/chrudimer/32/918651_2.png) [@chrudimer](https://forums.unrealengine.com/u/chrudimer)\ **Post date:** [September 14, 2020, 2:20pm UTC](https://forums.unrealengine.com/t/how-to-get-good-collision/471210/2 "2020-09-14T14:20:50Z")
Hi, depending on how precise you need it (1) create a mesh you want for collision in a 3d program like blender and use that (take a look at this here under “collision” [FBX Static Mesh Pipeline | Unreal Engine Documentation](https://docs.unrealengine.com/en-US/Engine/Content/Importing/FBX/StaticMeshes/index.html)) (2) use complex collision (that means you will have per poly exact collision, I would be careful with that due to performance)