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Understanding Mold Volumes

A mold volume consists of surfaces that locate a closed volume of space within the workpiece.
• Mold volumes:
– Have no solid material.
– Are ultimately used to create solid mold components.
– Are assembly-level features.
• As a best practice you should rename mold volumes.
• You can apply finishing features such as rounds and drafts.

Understanding Mold Volumes 1
Figure 1 – Model Tree of Mold Model

Understanding Mold Volumes 2
Figure 2 – Mold Volumes Shaded

Understanding Mold Volumes 3

Figure 3 – Mold Volumes No Hidden
Understanding Mold Volumes
A mold volume consists of surfaces that locate a closed volume of space within the workpiece. Because the mold volume is comprised of surfaces, it has no solid material. Creating mold volumes is an intermediate step to creating the final extracted mold components. Mold volumes are ultimately used to create the final solid extracted mold components. Figure 2 shows three different mold volumes. Because the mold volumes are surfaces, they appear magenta when the model display is set to something other than shading, as shown in Figure 3.
The following is some general information regarding mold volume creation:
• A mold volume can add or remove material.
• A mold volume is created as an assembly level protrusion or cut within the mold model.
• You can sketch mold volumes.
• A mold volume can be trimmed or split using other surfaces.
• Mold volume creation is an iterative process. You can create mold volumes at any time after the workpiece is assembled but before the final solid mold components are extracted.
A mold volume displays in the model tree with a different icon than that of the reference model and workpiece, as shown in Figure 1.
Because mold volumes are created within the workpiece, it is beneficial to create a style state that sets the workpiece to wireframe
when creating mold volumes. This enables you to more clearly see inside the workpiece, yet it still makes the workpiece and its surfaces
available if they need to be selected as references. The workpiece in the figures is set to wireframe.
Renaming Mold Volumes
When you create a mold volume, it is a best practice to rename it to something that helps you recognize it within the model tree. To rename a
mold volume, you can click Properties from the Controls group after starting the mold volume creation tool. You can also right-click in the graphics window and select Properties. This causes the Properties dialog box to appear, which enables you to edit the mold volume name. In Figure 1, notice that the mold volumes have been renamed.
Applying Finishing Features
You can add draft and round features to a mold volume in the same manner in which you add to any other solid part. This enables you to customize the mold volume. It is used to create the solid mold component.

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