# How can I make a mesh with smooth collisions in 3D?

**URL:** <https://forums.unrealengine.com/t/how-can-i-make-a-mesh-with-smooth-collisions-in-3d/491386>\
**Category:** World Creation\
**Tags:** collisions, unreal-engine, Physics, Collision, question\
**Created:** [November 27, 2021, 8:09pm UTC](https://forums.unrealengine.com/t/how-can-i-make-a-mesh-with-smooth-collisions-in-3d/491386 "2021-11-27T20:09:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Your\_mom1324](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Your\_mom1324](https://forums.unrealengine.com/u/Your_mom1324)\
**Post date:** [November 27, 2021, 8:09pm UTC](https://forums.unrealengine.com/t/how-can-i-make-a-mesh-with-smooth-collisions-in-3d/491386/1 "2021-11-27T20:09:48Z")

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I am making a mobile game and I currently have an infinitely generated straight slope. I want to add turns to the level but when I import the mesh and try “sledding” down it my character bounces up and down. The collision is rough and I was wondering if there was a way to make it smooth. I tried upping the detail of the mesh, to see if it would help but it just made the bumps smaller. You can see how the character bounces from the trail. I am also using the mesh for a mobile game so the high poly count would not be optimal. Thank you!

I used blender to make the model.

 ![353173-bounceproblem.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/a/d/2/ad250ece7115af1a8f91c67715624cbf7242af18.png)

 ![353174-complexcollision.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/c/d/f/cdfc76aa9e035338e362b24e1c92b288ee5e453b.png)

 ![353175-turn.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/f/5/f/f5fbbb3e799dd315a1d1ba71d03b9d1c55644033.png)

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**Author:** ![xSheim](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@xSheim](https://forums.unrealengine.com/u/xSheim)\
**Post date:** [November 27, 2021, 8:29pm UTC](https://forums.unrealengine.com/t/how-can-i-make-a-mesh-with-smooth-collisions-in-3d/491386/2 "2021-11-27T20:29:42Z")

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I believe you can use physical wheel suspension to fight this issue [link](https://www.youtube.com/watch?v=PWTCM6sZ6OE). Also, remember to align the velocity of your vehicle to the plane it’s moving along like in [this](https://www.youtube.com/watch?v=Gqrf_eG_CqI) example.

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**Author:** ![Your\_mom1324](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Your\_mom1324](https://forums.unrealengine.com/u/Your_mom1324)\
**Post date:** [November 28, 2021, 1:26am UTC](https://forums.unrealengine.com/t/how-can-i-make-a-mesh-with-smooth-collisions-in-3d/491386/3 "2021-11-28T01:26:49Z")

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Thank you so much! I’ll try that. I had really janky movement where I simulated physics on the character but this seems much better.