Additive manufacturing builds objects layer by layer from a CAD model, unlike
traditional methods that remove material through processes like milling. It allows for
intricate designs and complex geometries that traditional methods can’t achieve. 3D
printers use versatile, cost-effective materials and enable rapid prototyping, which
helps in modifying and iterating models for functionality and quality.

Additive manufacturing provides benefits such as agile product customization,
functional integration, and rapid, cost-effective spare parts procurement. It reduces
inventory and supply chain constraints, allows for complex geometries, and can lead
to significant cost savings. It also enhances precision and accuracy, which is crucial
for industries like aerospace, medical, and consumer goods.

Key 3D printer technologies include Fused Deposition Modeling (FDM),
Stereolithography (SLA), and Selective Laser Sintering (SLS). Each technology has its advantages: FDM is cost-effective and widely used for plastic parts; SLA offers high-resolution prints for detailed models; and SLS is suitable for both plastic and
metal parts with high precision. The choice depends on factors like material properties and production requirements.

The main advantages of 3D printing include rapid prototyping, customization,
reduced waste, and the ability to create complex geometries and intricately designed
products. 3D printing overcomes many challenges of traditional manufacturing
processes, enabling industries to innovate and deliver high-quality, intuitive products
efficiently.

Metal 3D printing is more expensive but is preferred for industries that require high
mechanical strength and heat resistance. Plastic 3D printing is more cost-effective
and suitable for lightweight parts. The choice between metal and plastic depends on
project criteria, including material properties and application requirements. Both
technologies offer unique advantages and should be selected based on the specific
needs of the project.