Hide Table of Contents

Scaling Factor and Draft in Mold Design

Scaling Factor

When you create a mold you must account for the scaling factor. The scaling factor is the amount the material in the mold shrinks or expands as it solidifies. The scaling factor depends on the type of material used and the shape of the mold, and is expressed as a percentage of the linear size (not volume) of the design part.

The software scales the cavity by the specified scaling factor, using this formula:

Cavity size = part size * (1 + scaling factor/100)

For example:
Desired adjustment Scaling factor in % (enter this number)
2% material shrinkage (cavity larger than part) 2.0
2% material expansion (cavity smaller than part) -2.0

Creating Drafts for Molds

You may need to add draft angles to molded design parts to make it possible to remove the finished part from the mold.

If you have a SolidWorks model, you can use the Split Line tool_Split_Line_Curves.gif tool to split faces and the Draft tool_Draft_Features.gif tool to add draft. You can also used the Rule Surface tool_Ruled_Surface_Mold_tools.gif tool with either SolidWorks or imported models to add draft, correct flawed surfaces, or create interlock surfaces.



Provide feedback on this topic

SOLIDWORKS welcomes your feedback concerning the presentation, accuracy, and thoroughness of the documentation. Use the form below to send your comments and suggestions about this topic directly to our documentation team. The documentation team cannot answer technical support questions. Click here for information about technical support.

* Required

 
*Email:  
Subject:   Feedback on Help Topics
Page:   Scaling Factor and Draft in Mold Design
*Comment:  
*   I acknowledge I have read and I hereby accept the privacy policy under which my Personal Data will be used by Dassault Systèmes

Print Topic

Select the scope of content to print:



x

We have detected you are using a browser version older than Internet Explorer 7. For optimized display, we suggest upgrading your browser to Internet Explorer 7 or newer.

 Never show this message again
x

Web Help Content Version: SOLIDWORKS 2013 SP05

To disable Web help from within SOLIDWORKS and use local help instead, click Help > Use SOLIDWORKS Web Help.

To report problems encountered with the Web help interface and search, contact your local support representative. To provide feedback on individual help topics, use the “Feedback on this topic” link on the individual topic page.