You can sketch slider mold volumes as an alternative to calculating undercut boundaries.
• Reasons to sketch slider mold volumes:
• Sketching guidelines:
– Calculate undercut boundaries for reference.
– Ensure your sketched slider accounts for the entire undercut geometry.
– The sketch must be closed.
Figure 2 – Sketched Slider
Figure 3 – Slider Volume too Small
Sketching Slider Mold Volumes
You can also sketch slider mold volumes. The following are reasons to sketch slider mold volumes:
• Shape — When calculated undercut boundaries are used, the resulting slider mold volume takes on the shape of the undercut geometry. If the
shape is not desired for manufacturing, or it cannot be manufactured, a slider mold volume can be sketched to account for the undercut geometry.
In Figure 1, the shape created by calculating undercut boundaries is not as conducive to manufacturing as the sketched slider mold volume in Figure 2.
• Size — Since the slider mold volume created by calculating undercut boundaries takes on the shape of the undercut, the slider mold volume
may be too small for manufacturing, as shown in Figure 3. Consequently, you can sketch a larger slider mold volume that accounts for the undercut, as shown in Figure 2.
• Result — Depending on the reference model geometry, sometimes the slider mold volume obtained by calculating undercut boundaries cannot be created, or the slider mold volume does not entirely account for undercut geometry. In Figure 1, the slider does not properly account for the round feature, and thus a sketched mold volume was created in Figure 2.
Guidelines for Sketching Sliders
When creating slider mold volumes using sketch-based features, consider the following guidelines:
• You can still initially calculate the undercut boundaries for the reference model even when you are sketching the slider mold volumes. The analysis helps you determine the locations in the mold model where sliders will be required and helps ensure that you have accounted for all undercut geometry.
• Ensure that the sketch you create accounts for the entire undercut geometry. That is, make sure that the entire undercut geometry is contained within the resulting sketched slider mold volume. It can be beneficial to utilize the sides of the undercut geometry as sketching references.
• Because the slider is just a special type of mold volume, you can use any sketch-based feature that is available for sketching the conventional mold volume on the slider mold volume.
• Because the slider is a mold volume, the sketch must be closed