2D CAD Drafting Vs. 3D CAD Modeling – Which is Better

CAD (Computer-Aided Design) has changed the workflow of how industrial designers, manufacturers and architects draft their designs. It enables them to innovate the product design by evaluating all possible outcomes and create efficient, improved solutions faster. While most professionals have adopted 3D CAD successfully, many still use 2D CAD for essential functions.

There are many advantages of using 3D modeling in industries like civil, architectural and more. However, 2D drafting remains popular. In this article, we will identify the differences between both and which one you can choose for your next engineering project.

2D Vs. 3D CAD

2D CAD Drafting

It is widely used as an alternative to traditional hand drafting. Designers who provide 2D drafting services create digital formats for an accurate representation of objects as per the requirement. It includes developing floor plans, landscape layouts, permit drawings and inspection plans for different facilities.

Benefits• Helps create efficient & quick designs without using technical drawing instruments• A cost-effective alternative to 3D modeling for a simple, small-scale project• Enables you to share design ideas with others as and when required

Drawbacks• Error-prone process of creating intricate product designs• Design changes are complicated, as you might have to go through multiple iterations to cover all the details• Requires physical prototyping, as unlike 3D models, 2D drawings can’t help to explore all the options for design changes and related issues

3D CAD ModelingIt helps designers and engineers create realistic models with all the properties of an actual physical object. It enables users to visualize space, movements of items, accessibility, possible issues and so on in an interactive manner. From catching errors in the initial design to developing the final product, 3D models help improve the project’s overall efficiency.

Benefits• Better visualization of designs than 2D drawings• Modifying a 3D model is an inexpensive and faster process• Eliminates field interferences that result in less rework• Speeds up the approval process, as it is easier to represent details with 3D models even to the non-technical persons• Early identification of errors in design saves significant efforts and time to develop the final solution• Ideal for enhancing 2D designs for accurate, efficient modeling and design of buildings, plant facilities and more

Drawbacks• Improper use of layers and blocks may increase the risk of potential design failure

• You might end up paying more for simple concept designs

Quick Comparison of 2D vs. 3D CAD

Software UseWith 2D CAD, users can draw only two-dimensional objects. It is ideal for the orthographic projections, including plans, elevations and sections. While 3D CAD helps create three-dimensional objects and produce different views by merely rotating the models.

RenderingDesigners get limited functionalities with a 2D CAD tool. It does not help to create realistic images to represent how an actual structure would look like. Also, rendering is not possible in 2D CAD software. For this, users require a separate program.

On the other hand, 3D CAD design services eliminate the limitations of 2D CAD drafting. Programs such as AutoCAD, SolidWorks and more help demonstrate how the design will perform in the real world.

Cost3D CAD modeling may require a higher upfront investment than 2D drawings. However, it provides long-term benefits in terms of project efficiency, modification and delivery.

Which One is Better – 2D or 3D CAD?The answer to this question varies as per your business requirements. You can consider factors such as the project complexity, the information you need from the digital designs and how you will use that data. You can also consult 2D and 3D modeling service providers. They can help you choose the right technology & tools according to your project needs and complete it with quality and accuracy.

Judith Morrison is an expert in the field of industrial engineering and writes articles related to piping, civil, equipment engineering related articles.