Custom Online 3D Printing Service and Selective Laser Sintering
(SLS) Prototype
What is SLS?
The Basics Of Selective Laser Sintering
Selective laser sintering (SLS) is a powder bed 3D printing
technology that produces highly accurate and durable parts capable
of being used directly in end-use, low-volume production. SLS is a
newer 3D printing process that is often thought of as a cousin to
the popular metal 3D printing technology direct metal laser
sintering (DMLS). Both processes work by utilizing a laser to
precisely fuse a bed of powder to construct a part from a 3D CAD
file. SLS specializes in nylon or polyamide powder particles to
create parts, while DMLS uses metal particles, and is extremely
common for prototyping and low volume production.
Concept Models | The speed and versatility of SLS printing lets product developers
create physical snapshots of their designs through the iterative
process.
|
Rapid Prototyping | SLS prototyping can be used to create fully-functional prototypes,
complete with moving parts, as well as all-in-one assemblies.
|
Digital Manufacturing | The high accuracy and consistency of SLS makes it an ideal way to
build large quantities of discrete or customized parts. |
Benefits of SLS 3D Printing
It can be used to make parts using a variety of SLS materials,
including plastic, metal, ceramic, or glass powder, making it a
popular machining process. Since SLS doesn’t require a support
structure like most other 3D printing tech, parts can be made in
greater quantities, but with less labor and material expense.
Additionally, because the support structure doesn’t need to be
removed, there is less risk of damage to the complex internal
geometries 3D manufacturing is capable of producing.
SLS Materials
Selective Laser Sintering 3D Printing Materials:
Material Name
| Other Common Names | Shore Hardness | Elongation at Break (%) | Impact Strength, Notched (kJ/m²) |
| Nylon 12 |
Durable plastic, PA12, PA 2200
| 75D | 18% | 4.8 kJ/m² |
| Nylon 12, Glass-filled (GF) |
Stiff plastic, PA12 GF, PA 3200 GF
| 80D | 9% | 4.2 kJ/m² |
| Nylon 11 EX |
Ductile plastic, PA11, Rilsan® Invent Natural | 77D | 45% | No break |
| Nylon 12, Carbon-Filled (CF) | High-performance plastic, carbon-filled PA12, PA 602-CF, carbonmide | N/A | 4% | 5.3 kJ/m² |
| Nylon 12, Aluminum-Filled (AF) |
Metallic gray plastic, aluminum-filled PA12, alumide
| 76D | 3% | 4.6 kJ/m² |
| Nylon 12, Mineral-Filled (HST) |
Heat-resistant plastic, mineral fiber-reinforced PA12, PA 620-MF
| 75D | 3-5% | N/A |
| Nylon 12, Flame Retardant (FR) |
Meets the FAR 25.853 60 second burn specification, PA 606-FR
| 73D | 24% | N/A |
SLS General Tolerances
| Description | Tolerance Notes |
| General Tolerances | +/- 0.010” for the first inch is typical, plus +/- 0.002” for every
inch thereafter. |
| Build Area | Build area up to 13" x 13" x 20". Glass filled can extend up to 26"
x 15" x 23". |
| Minimum Feature Size | 0.030" or greater. |
| Standard Layer Thickness | 0.0045" |
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