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Easy what to make hollow cylinder?

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More Generic approach to create hollow Cylinder and Cones


for hollow tube set 

    var outerTopDiameter = 4
    var outerBottomDiameter = outerTopDiameter

    var height = 5;
    var thickness = .1
    //Outer Cylinder
    var outerTopDiameter = 4
    var outerBottomDiameter = 7

    //Inner Cylinder
    var innerTopDiameter = outerTopDiameter - thickness
    var innerBottomDiameter = outerBottomDiameter - thickness

    var tess = 20;

    var inner = BABYLON.MeshBuilder.CreateCylinder("cone", { diameterTop: innerTopDiameter, diameterBottom: innerBottomDiameter, height: height, tessellation: tess }, scene);
    //BABYLON.Mesh.CreateCylinder("inner", height, innerDiameter, innerDiameter, tess, 1, scene);
    var outer = BABYLON.MeshBuilder.CreateCylinder("cone", { diameterTop: outerTopDiameter, diameterBottom: outerBottomDiameter, height: height, tessellation: tess }, scene);
    //BABYLON.Mesh.CreateCylinder("outer", height, outerDiameter, outerDiameter, tess, 1, scene);

    var innerCSG = BABYLON.CSG.FromMesh(inner);
    var outerCSG = BABYLON.CSG.FromMesh(outer);

    var subCSG = outerCSG.subtract(innerCSG);

    var mat0 = new BABYLON.StandardMaterial("mat0", scene);

    var newMesh = subCSG.toMesh("csg2", mat0, scene);



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