SELECTIVE LASER
SINTERING
By Imad Aznam
AS247 4A
Rapid prototyping
A fast fabrication of physical parts, model or
assembly using 3D computer aided design (CAD)
Usually completed using additive manufacturing
Commonly known as 3D printing
Rapid prototyping
◦ Other technologies used for RP includes high-speed machining,
casting, molding and extruding
◦ Other conventional process for RP are:
◦ Subtractive: block of material is carved to produce desire shape
using milling, grinding or turning
◦ Compressive: material is forced into desired shape before
solidified with casting, compressive sintering or molding
SELECTIVE LASER SINTERING
◦ An additive manufacturing technique that uses laser as power source
◦ Used to sinter powdered material
◦ Binds material together to create solid structure
◦ A relatively new technology that mainly used for rapid prototyping and low-volume production
MATERIAL USED
◦ Quality of printed structures depends on various factors including material used to make the product
◦ Material used are in powder form
◦ The materials are – polyamides(PA), polystyrene(PS), thermoplastic elastomers(TPE) and
polyaryletherketones(PAEK).
◦ The most commonly used material in the idustries is polyamides(PA).
PROCESS
VIDEO PROCESS
• How does Selective laser sintering works https://youtu.be/ruvRijM7f50
ADVANTAGES OF SLS
High level resolution
Fast turnaround times
Fantastic mechanical properties
High strength and stiffness
Wide selection of materials
DISADVANTAGES
OF SLS
◦ 3D prints are brittle in nature
◦ Post-processing procedures are difficult
PRODUCT
SAMPLES
CONCLUSION
◦ For product teams, rapid prototyping may be a huge
time saver and crisis avoider. Product managers have
qualitative confirmation of their assumptions or
unambiguous signs that revisions are necessary with
reliable input from users interacting with prototypes.
All of this helps to lessen the chances of the final
product falling short of expectations.