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I'm trying to create a length of pipe with includes straight and curved lengths.

I'm wanting to create a mesh so I can import it into unity, add a mesh collider and run fluid through it.

Does anyone know the best way to approach this?

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    $\begingroup$ For modelling pipes, bezier curves are recommended: see the "bevel object" of curves, converting curves to meshes, and the curve modifier. Using it as a collision object for real time fluid simulations in Unity sounds like a separate problem for the Unity forums. $\endgroup$
    – dixiepig
    Commented Apr 13, 2018 at 6:29
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    $\begingroup$ As well as curve objects, enable the Add Mesh Extra Objects addon. It adds Mechanical->Pipe Joints to the add mesh object menu which has several variations of joints. $\endgroup$
    – sambler
    Commented Apr 15, 2018 at 15:40

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To model it I would add a cylinder, tab for edit mode, remove the caps of the cylinder.

Then in add and apply a solidify modifier.

You possibly should also create a simplified pipe with smaller amount of vertices to work as a collision mesh for a mesh collider, because higher poly pipe might require quite a bit of collision calculations.

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