Figure 10: The "Mold" tool provides an artist with a real-life paradigm of modeling clay with fingers. Notice the depressions in the sphere caused by the "Mold" tool.
"Mold" works exactly the same way that a sculptor's fingers do with modeling clay. You are given a second object as a "mold tool". By default, it is a sphere, but you can choose from the given list of tools. To use another object in the scene as a custom tool, select that object, then choose "_Selected_Object" in the list. Note that "Mold" will work well only if the selected tool is "convex and closed" (that is, it does not have holes and depressions).
You can move, resize and rotate the tool using the 3D manipulator (see "Options - Selection Highlight")
When the tool is "hot", it is colored yellow and it is ready to mold the object. Move the tool toward the object, and press it against the surface. The tool turns red whenever it touches a part of the object and begins to mold it. Notice how the shape of the object changes. As soon as you let go of the tool, it turns blue (cold!). Move it to the next desired position. Press "h" or turn the "Hot" toggle on, and start molding again. If you move the tool (while it is cold) inside the object, turn it hot, then press it against the surface, you get the effect of pushing out on the surface.
Note: Since the triangle density of the object does not change, if the object is coarse compared to the tool, molding may have the effect of pushing the object surface, rather than creating the impression of the mold tool on the object. Using the modeling tools, make sure that the object has enough triangle density.
