Saratech Inc Blog: The Challenge of Good Design Saratech Inc Blog: The Challenge of Good Design

The Challenge of Good Design
As an instructor of Computer-Aided Design (CAD) for over 15 years, one of the most common questions I receive is “What’s the best way to design a part?”  It seems a rather straightforward question, but there are many aspects to the challenge of a good design. My answer typically includes three central areas of consideration: accuracy, manufacturability and simplicity. I will address the first two this time and simplicity in my next posting.

Accuracy must be the goal of any finished design. Ask most CAD managers what they look for in a new candidate, and most will specify attention to detail in their description. Fortunately, one of the greatest benefits of computer-aided design is the number of tools available for creating and proving an accurate geometry. Using these validation tools effectively is essential, considering that many companies rely on products produced around the world. Even though parts may have to travel thousands of miles for assembly, the difference between successes and scrap still boils down to thousandths of an inch. Put quite simply; mistakes equal money.

I have seen firsthand the importance of understanding manufacturing processes when realizing a design. It becomes quite apparent, for instance, when looking at the differences between forged, machined, or injected products. These qualities will affect the way blends and draft angles are applied, material thickness and minimum clearances used within the part. That is a mere scratch at the surface though. I think studying manufacturing methods make designers more conscious of the challenge of a good design. Just remember that most designs, by themselves, are feasible. However, that does not automatically translate to cost-effective or efficient manufacturing. Knowing the difference makes a good computer-aided designer even better.


CAD software is a great tool and has significantly streamlined design and manufacturing, while cutting waste and lowering costs. Nevertheless, the software itself is no smarter than the operator is. I believe that experience is a great teacher, and it becomes more meaningful with a proactive approach. So get curious and get started!

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