1. What is 3d printing? 2. History of 3d printing ( How, when, where and when it started & who are the organiser  3. How has technology developed? 4. Case studies 5. What are the constraints of technology? 6. Investigate new and emerging development ( who, where, why & how they are occurring) 7. Evaluation 8. Executive summary  9. Bibliography 10. Reference should be given all (Referencing in harvard system)    (WORD LIMIT 1200)