Once a base feature exists in a design, additional geometry is created by referencing it. The following sketching tools enable you to create new entities based on existing geometry.
Incorporating the use of projected geometry into a sketch enables you to build relationships between features. In the example below, the edges of the hole were projected onto a sketch on the front face. The sketch was completed by adding lines between the points and the sketch was extruded as shown on the right. The projected edges create a relationship between the hole and the extrusion so that if the diameter of the hole changes, the height of the extrusion changes accordingly.
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This is a short excerpt from the Autodesk Fusion 360: Introduction to Parametric Modeling student guide, by ASCENT - Center for Technical Knowledge, an Autodesk Authorized Publisher. For more information, visit http://www.ASCENTed.com.
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