You're reading from Making Your CAM Journey Easier with Fusion 360

Product typeBook

Published inMar 2023

PublisherPackt

ISBN-139781804612576

Edition1st Edition

Concepts

3D Printing

Author (1)

Fabrizio Cimò

Handling undercuts and accessibility

There is a typical issue with milled parts that can be found in models designed without a clear understanding of manufacturing limitations: geometry undercuts.

What is this issue all about? The important thing to understand is that our machine can reach any point located inside its working boundaries, but the geometry we are trying to machine may restrict accessibility and impede tool movement. Areas not accessible to our tool are called undercuts.

The following diagram is an example of a badly designed part featuring an undercut:

Figure 7.1: Undercut

As you can see from the diagram, the highlighted area is inaccessible to our tool; therefore, it cannot be machined.

Before starting any milling setup, we should always analyze in detail part geometry and check for undercuts. If the shape to be machined is quite complex, there is a useful tool inside Fusion 360 that can spot undercuts. This command is called Accessibility...

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Making Your CAM Journey Easier with Fusion 360

Published in: Mar 2023Publisher: PacktISBN-13: 9781804612576

Author (1)

Fabrizio Cimò

Fabrizio Cimò is an Italian engineer who has always had a passion for the world of 3D graphics and design. During his first degree in industrial design, he started uploading video lessons covering 3D modeling tools such as Rhinoceros, Blender, and Fusion 360 on his YouTube channel. Sometime later, Autodesk noticed his work and asked him to keep promoting Fusion 360 as an official student ambassador. During this time, he also joined Dynamis PRC, a racing team from Milano PT competing in the Formula SAE championship; thanks to this experience and his avid curiosity, he improved his knowledge of the manufacturing world. Today, Fabrizio works as a machine designer for an important company in the laser-cutting sector.
Read more about Fabrizio Cimò

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Handling undercuts and accessibility

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