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In attempting to learn how to do tubes and shapes of that sort, I've been trying to make a doughnut. Other than freestyle, I haven't been having any luck, and keep in mind, I'm talking a curved tube, not a straight one. How do I make a curved tube shape in 3d? ELI5 (Explain like i'm 5)
I highly recommend you go through some of the tutorials.
In this case, you would use a revolve feature
Make the section and include a centerline in the sketch to revolve a pair of concentric circles around.