use:
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A behavior of a large number of K-3D
tools, including DoBeSphere, Extrude, Lathe, Rotate, Scale, Slant, Taper, Translate, Twist, and Wave is altered by their Tool Origin Point
a user-defined point around
which their respective transformations are applied. In many cases, the Tool Origin Point
represents a point that is unaffected by the transformation. For example, if you are
altering the following object: 
And you scale it by 200% along the X and Y axes using the
objects geometric center (the default for the Tool Center Point), you get the
following results:

Since the Tool Center Point was set to "Geometric Center",
the cube was scaled around its center. If the Tool Center Point had been set to
"Min. X", instead, the cube would have been scaled around its minimum X
coordinate:

Note that the left edge of the cube (its minimum X value)
hasnt moved. With the Tool Center Point set to "Max Y), youd see the
following:

Again, the top edge of the cube (its maximum Y value)
hasnt moved, and the rest of the cube has been scaled around it. |