How to make a hollow tube manually

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1.Start a new part, clicking in the main window.
2.Make a new sketch for this part.
3.In the 2d commands draw a circle.
4.Select Offset and so make another circle inside the first.
5.After getting the two circles to the rights size clikc on Finish sketch
6.You are now in the 3d Model tab
7.Click on Extrude and click between the two circles so that the ring becomes grey.

 

 

 

Text, images and diagrams © 2021 Owen F. Ransen. All rights reserved. (But copy the source code as much as you want!)