Use 2 cylinders. Export one and then import it with reversed normals. Use this for the inside of the "tube." Then take 2 torus and flatten them to fill the small gap between the "inside" and "outside" cylinders. Export the "parts" then import as 1 prop. cheers, dr geep ;=]

Remember ... "With Poser, all things are possible, and poseable!"

cheers,

dr geep ... :o]

edited 10/5/2019