Which process allows rapid modification of 3D product designs?

The process that allows for rapid modification of 3D product designs is Computer-aided Design (CAD). CAD software enables designers to create precise drawings and models in a digital environment where changes can be made quickly and easily. When a designer wants to adjust dimensions, alter shapes, or integrate new components, CAD allows for these modifications to be executed with a few clicks. This is particularly advantageous in a design environment, as it supports iterative processes where multiple versions can be created and evaluated in a short period.

Other methods such as manual drafting techniques, traditional sketching methods, and physical model building are generally more time-consuming and involve more effort when it comes to making changes. For instance, manual drafting requires redrawing or erasing, which is less efficient than simply using software tools. Similarly, traditional sketching methods do not provide the precision or ease of making modifications, as they rely on physical paper and pencil. Physical model building, while useful for understanding scale and form, limits the ability to quickly conceptualize and modify designs when compared to the versatility offered by CAD.