• Definition: 3D printing, also known as additive manufacturing, is a technology that constructs three-dimensional objects by adding material layer by layer based on a digital model.
  • Materials Used: This process can use a variety of materials, including plastics, composites, and bio-materials, to create objects of varying shapes, sizes, rigidities, and colors.



  • Setup: To perform 3D printing, a personal computer connected to a 3D printer is required.
  • Design: The desired object is first designed using computer-aided design (CAD) software.
  • Printing: Once the design is ready, the user sends it to the 3D printer, which then constructs the object by adding material layer by layer.
  • Contrast: This method contrasts with traditional subtractive manufacturing, where material is removed from a solid block to create the object.


  • ISRO’s Innovation: The Indian Space Research Organisation (ISRO) successfully tested a liquid rocket engine, PS4, made using 3D printing.
  • Efficiency: By redesigning the engine for 3D printing, ISRO reduced the number of parts from 14 to a single piece, eliminating 19 weld joints.
  • Resource Saving: This approach saved 97% of raw material and reduced production time by 60%.


Future Applications:

  • Diverse Industries: 3D printing is transforming sectors such as healthcare, automotive, and aerospace.
  • Healthcare Example: During the COVID-19 pandemic, the healthcare industry utilized 3D printing to produce essential medical equipment like swabs, face shields, masks, and ventilator parts.
  • Infrastructure Example: In a notable achievement, India inaugurated its first 3D-printed post office last year, showcasing the technology’s potential in infrastructure development.
  • 3D printing is poised to revolutionize multiple sectors by enabling more efficient, cost-effective, and innovative manufacturing processes.
Legacy Editor Changed status to publish July 11, 2024