1. Introduction to 3D printing 2. Genres of 3D printing techniques 3. Theory of 3D printing and mechanisms 4. 3D printing of polymer composites 5. 3D printing of ceramics 6. 3D printing of metals 7. 3D printing in drug delivery 8.

3D printing in construction industry 9. 3D printing in tissue engineering 10. 3D printing in environmental applications 11. 3D printing in food sectors 12. 3D printing in dentistry 13. 3D printing in artificial organ fabrication 14. 3D printing in electrochemistry 15. 3D printing in electronics 16.

3D printing in EMI shielding 17. 3D printing in catalysis 18. 3D printing of thermosets 19. 3D printing in scientific instrumentation 20. 3D printing in nanomedicines 21. Artificial neural network for 3D printing 22. Advancements in RepRap 3-D printer 23. Future Outlooks, and the current market of 3D printing.