Three-dimensional printing

Abstract

Enquiries to Tecmath about a colour printer claimed to be capable of printing three-dimensional figures led on to internet research looking at a new field of research and practical application being explored known as "rapid prototyping" used for producing prototypes in mechanical engineering. Over 20 production processes already exist and the three basic principles most often mentioned are described. These are Selective Laser Sinteringt (SLS), Stereolithographic Apparatus (SLA) and Fused Deposit Modeling (FDM), each of which is diagrammatically illustrated. A variety of 3D CAD software programmes are used in all three and current usage of the technique is noted in footwear, clothing accessories and jewellery. Approaches were made to various companies on the present state of development and the responses detailed. One concerned prototyping by UCLA doctors planning to separate Siamese twins. Nine relevant websites of individuals and companies involved in this.