Definition and Techniques of Rapid Prototyping
- Rapid prototyping is the fabrication of scale models using CAD data.
- It utilizes 3D printing or additive layer manufacturing technology.
- The first methods for rapid prototyping were available in mid-1987.
- It is used for a wide range of applications and can produce production-quality parts.
- Online service bureaus have emerged due to the favorable economics of rapid prototyping.
- CAD data must represent a valid geometric model for rapid prototyping.
- CAD post-processors approximate CAD geometric forms with simplified mathematical forms.
- STL file format is commonly used for transferring solid geometric models.
- Geometric models are sliced into layers and scanned into lines for motion control trajectories.
- The layer-to-layer physical building process is mimicked in reverse.

Application Areas of Rapid Prototyping
- Rapid prototyping is commonly applied in software engineering.
- It is used in industries such as Aerospace, Automotive, Financial Services, Product development, and Healthcare.
- Aerospace design and industrial teams rely on rapid prototyping for new methodologies.
- Rapid prototyping allows for accurate visualization of finished products.
- Industrial 3D printing enables the production of large-scale molds and spare parts.

History of Rapid Prototyping
- The Unix Circuit Design System (UCDS) automated the task of converting drawings for circuit board fabrication in the 1970s.
- The machine tool crisis in the 1980s led to the development of rapid prototyping systems.
- The National Science Foundation coordinated studies to inform strategic planners.
- Rapid prototyping technology has roots in topography and photosculpture practices.
- Charles Hull developed the first rapid prototyping process called stereolithography.

Evolution of Rapid Prototyping Technologies
- Solid Freeform Fabrication technologies are recognised as rapid prototyping, 3D printing, or additive manufacturing.
- Various researchers proposed polymerization, deposition, and sintering techniques for rapid prototyping.
- Hideo Kodama published the first account of a solid model fabricated using a photopolymer rapid prototyping system.
- Stratasys developed the first 3D rapid prototyping system using Fused Deposition Modeling (FDM).
- Sanders Prototype, Inc introduced the first desktop inkjet 3D Printer (3DP) for rapid prototyping.
- Invention of Modelmaker 6Pro in 1993
- Introduction of Modelmaker 2 in 1997
- Introduction of Z-Corp's MIT 3DP powder binding technology in 1995
- Early recognition of low resolution, low strength output's value in various applications
- Constant innovations to improve speed and mass production capabilities

Impact and Applications
- Use of RP for fully functional component production
- RP's impact on product performance evaluation using CAD/CAE
- RP's role in prototyping telematics services for connected cars
- The new age of rapid prototyping
- Industrial applications of 3D printers