1. You need to create the tube and
the object to travel through it in this project.
2. Create a new file.
View > Rulers
View > Grid > Show
Grid
View > Grid > Edit
Grid (10 X 10 px)
3. Drag the horizontal & vertical guide lines
to get the center.
View > Guides > Lock Guides
4. Create the tube like structure as shown using Line
Tool.

5. Drag the Arrow Tool from 40 to 1 st frame to select
the segment.
6. Modify > Frames >
Convert to Key frames

7. All the frames will be converted into key frames.
8. Select 1st frame. Deselect the selection in the
artwork by pressing Esc key.
Now we will draw the object, made up of rectangle
which will travel through the tube.
9. Draw a small rectangle using Rectangle Tool at
the starting point of the tube. Keep the length of the object fixed.
10. Using > key move to the next frame. With the
advancement of each frame draw the rectangle ahead with the constant
increment.
11. At the turning point draw the object as shown
in the above figure.
12. Save the file.
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