Working with the 3D pen is addictive. You can create actual objects, and that is much different as to drawing.  I don’t need samples, I  just like to create objects, and it is always currious do discover what comes out.  The techniques I know now make it easy to make any object. Also the in-between are fun to watch. I made a few photos of the new work I am doing in the early stages. You can see how the structures develope:

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