MJF vs. SLA
Multi Jet Fusion (MJF) and Stereolithography (SLA) are two 3D printing technologies offered at Craftcloud®, each with its own strengths. Do you know which one’s best for your project?
The Technologies in a Nutshell
MJF is an industrial additive manufacturing process developed by HP® that uses a power-and-fusing mechanism to build high-density nylon parts. A thin layer of polymer powder is spread across the build platform, followed by an inkjet array that deposits fusing and detailing agents across the material bed. High-power infrared lamps then pass over the surface to melt the areas where the fusing agent was applied, solidifying the layer while the detailing agent ensures sharp edges and smooth surfaces. Because the parts are supported by unsintered powder throughout the build, MJF allows for the creation of complex, interlocking geometries without the need for manual support structures.
SLA is a high-precision 3D printing technology that uses a concentrated ultraviolet (UV) laser to solidify liquid photopolymer resin. The build platform is submerged in a vat of resin, where the laser traces a specific cross-section of the design to cure the liquid into a solid plastic layer. This process is repeated as the platform moves incrementally, creating parts with isotropic mechanical properties and a nearly perfectly smooth surface finish. SLA is widely considered the best choice for applications that require extreme dimensional accuracy and intricate detail, such as dental models, jewelry, and high-fidelity miniatures.
When it comes to materials, while MJF offers a more limited but specialized range of high-performance, engineering-grade thermoplastics like nylon 11 and 12, SLA provides a much broader range of resins with diverse properties.
Best Use Cases
MJF could be the best option if your project involves:
- Functional part production
- Durable jigs and fixtures
- Thin-walled enclosures
SLA would be the better choice for:
- High-detail miniatures and jewelry
- Dental and medical models
- Clear prototypes or designs
Do you want to know how much your model will cost depending on technology and material chosen? Upload it and in a few clicks, have your answer so you can make an informed decision.