Over the years, traditional manufacturing methods have been standard in the electronics industry. These age-old systems allowed for fine-tuned processes, quality control, and high production volumes for PCBs, casings, and other electronic components.

However, modern smart manufacturing methods like additive manufacturing create a more agile and productive industrial base.

Thanks to the rise in smart technology, customers now expect greater customisation, faster delivery times, and higher product quality. In order to stay competitive and meet evolving customer demands, manufacturers must understand the benefits and considerations of each method.

Furthermore, they must recognise their advantages for the electronics manufacturing industry. To verify general assembly criteria, engineers consult official IPC industry standards.

Not sure what the core differences are between traditional techniques and smart manufacturing methods? Let us explain…

Traditional subtractive manufacturing processes vary depending on the project and material. Computer numerical control (CNC) machining remains one of the most common methods for producing PCBs, semiconductors, electronic components, and casings.

Specifically, CNC machining uses a computerised process where pre-programmed software controls the production equipment. This code instructs the machine on how to make holes, channels, and cuts. Consequently, this technology has served the electronics industry for decades.

So, what are the primary benefits and drawbacks of CNC machining?

Used for a wide range of materials. CNC machining processes copper PCBs, plastics, and metal enclosures with ease.

Allows for a high level of precision. As the electronics industry demands smaller packages, manufacturers rely on CNC machining for intricate components with tight tolerances.

Offers reliability for manufacturers. Operators repeat CNC machining steps consistently without deviating from the original design, increasing overall efficiency.

Contributes to a reduction in manufacturing costs. CNC machining creates prototypes for testing before mass production begins, preventing costly errors.

High initial costs. Advanced CNC units fit large production runs best, where high volume justifies the machining investment. Furthermore, operational costs rise alongside machine complexity.

Required expertise. Operating a CNC machine requires specialists who understand programmable codes and complex machine mechanics thoroughly.

Unavoidable material waste. Traditional subtractive processes generate material waste in the form of chips, requiring responsible disposal or recycling.

Additive manufacturing (AM) joins materials layer by layer using 3D model data.

Additive applications span the entire electronics industry. Examples include heat exchangers, component housings, 3D circuit boards, and inductors.

However, like all processes, it features specific advantages and disadvantages…

Rapid prototyping. Low costs and fast turnaround make additive manufacturing ideal for testing single prototype items in real environments. Computer-aided design (CAD) then applies necessary adjustments efficiently.

Fast production turnaround. Traditional methods require custom tooling that increases costs and delays production. With AM, operators use the approved prototype equipment directly for production runs.

Increased design flexibility. When designing PCBs, engineers build complex shapes that subtractive methods cannot achieve, enabling creative and efficient layouts.

Better waste management. Additive manufacturing generates minimal waste because printers only use the material needed for the part. Consequently, unused raw material serves future production cycles.