What is Additive Manufacturing?

  • Additive Manufacturing (AM), or 3D printing, is a digital engineering process that creates physical objects by depositing material layer by layer, contrasting with subtractive conventional manufacturing.
  • It integrates computing, electronics, design software, and materials science, using CAD, AI, and pattern recognition.

Global Market Potential

  • Global AM machines market projected to reach USD 149 billion by 2035.
  • AM-electronics supply chain expected to grow from USD 18 billion to USD 112 billion.

Significance for India

  • Opportunity to become a competitive manufacturer of advanced platforms using polymers, metals, composites, ceramics, and semiconductor-grade materials.
  • Strengthens indigenous manufacturing, reduces import dependence, and advances Atmanirbhar Bharat and Viksit Bharat.

Materials Used in AM

  • Thermoplastics: ABS, PC, PLA; PVA for support structures.
  • Metals: Gold, silver, stainless steel, titanium.
  • Ceramics: Zirconia, alumina, tricalcium phosphate; glass-based products.
  • Biomaterials: Calcium phosphate, silicon compounds, zinc-based; bio-inks from stem cells; 3D bioprinting for tissues.

How AM Works

  1. Virtual Design: 3D model via CAD, 3D scanning, or AI.
  2. STL File: Converts model to Standard Tessellation Language.
  3. Slicing: Software divides model into layers.
  4. Printing: AM machine builds object layer by layer.
  5. Additive Process: Material deposition with precise control.
  6. Final Object: Post-processing for finish.

Key Applications in India

  • Space & Aerospace: Agnikul Cosmos' Agnibaan SOrTeD with single-piece AM-printed semi-cryogenic engine (May 2024); NSAM supports start-ups.
  • Defence: Indian Army's first AM-printed two-storey dwelling in Ahmedabad (12 weeks); precast structures in Ladakh; MRO facilities.
  • Healthcare: Indigenous medical devices, customized implants; OsteoForge silk-based implants; TDB-supported 3D-printed bone grafts.
  • Electronics: AM-printed batteries, antennas, varistors, capacitors; IISc's AM-printed Photonic Integrated Circuit (PIC) blocks.
  • Construction: Kelvin 6K Pro printer builds 2,500 sq. ft. homes in <30 days; 30% lower material/logistics costs, 90% lower emissions.
  • Energy Storage: Concrete-based supercapacitors for solar energy storage.

Government Initiatives

National Strategy for Additive Manufacturing (NSAM)

  • Launched by MeitY in February 2022.
  • Aligned with Make in India and Atmanirbhar Bharat.
  • Targets: Capture 5% of global AM market; add ~USD 1 billion to GDP; develop 50 India-specific AM technologies; nurture 100 start-ups and 500 new products; train 1 lakh skilled workers; develop capabilities across 10 sectors.
  • Institutional Support: Seven Development and Deployment Centres.
  • School-Level: Atal Tinkering Labs (ATLs) with ₹20 lakh grant, 3D printers, robotics, IoT kits.

Progress Under NSAM

  • 1.54 lakh individuals trained in AM skills.
  • 56 AM start-ups supported.
  • 65 India-specific technologies developed.
  • Applications across aerospace, medical devices, electronics, energy, food processing, photonics.

NSAM 2.0

  • Being conceptualised to accelerate market growth, indigenous capabilities, commercial adoption.
  • Priorities: IPR generation, digital integration, affordability via cluster-based development, AM-electronics value chain, start-ups, defence, SDG-driven pilots, international cooperation.

National Additive Manufacturing Symposium (NAMS)

  • National platform for collaboration.
  • NAMS 2026: 2nd edition on 13 March 2026 in New Delhi; MoUs exchanged, new products launched; discussions on NSAM 2.0, defence, R&D centres.

Emerging Science, Technology and Innovation Conclave (ESTIC) 2026

  • 2nd edition: 27-29 October 2026 at Bharat Mandapam, New Delhi.
  • Theme: “Creative Minds, Catalyzing Science, Empowering Technologies.”
  • Organised by CSIR; covers 12 thematic areas including AM.

Conclusion

  • AM transforms India’s manufacturing, strengthens indigenous production, reduces imports, generates skilled employment.
  • Supported by NSAM and NSAM 2.0, advances Industry 5.0 and SDGs.
  • Wider adoption will strengthen Atmanirbhar Bharat and Viksit Bharat 2047.

Mains Practice Question

Additive Manufacturing is emerging as a transformative technology for India’s manufacturing ecosystem. Discuss.