SLA vs MJF — precision and finish vs production-grade strength.
SLA delivers the best surface finish and tightest tolerances in our catalog — ideal for visual prototypes, snap-fit validation, and parts that will be painted or finished. MJF delivers the best mechanical properties and batch consistency — ideal for end-use production parts, functional testing, and volume runs. These two technologies complement each other across the product development lifecycle.
Specifications
Head-to-head comparison
| Spec | SLA | MJF |
|---|---|---|
| Tolerances | ±0.2mm | ±0.3mm |
| Layer height | 0.025-0.1mm | 0.08mm |
| Min wall thickness | 0.8mm | 0.7mm |
| Max build size | 335 x 200 x 300mm | 380 x 284 x 380mm |
| Lead time | From 2 business days | From 5 business days |
| Materials | Standard Resin, Grey Pro Resin, Durable Resin, Tough 2K, Tough 1500, Rigid 4K, Rigid 10K, High Temp, Flexible, Elastic, Castable | Nylon PA12, Nylon PA11, Nylon PA12 Glass Filled |
| Best for | Visual prototypes, Medical models, Casting patterns, High-detail parts, Presentation models | End-use production parts, Production runs, Complex geometries, Automotive components, Aerospace hardware |
Our recommendation
Choose SLA when surface quality and dimensional precision are the priority — client presentations, snap-fit prototypes, and parts that need painting. Choose MJF when mechanical performance and batch consistency matter — production parts, functional testing, and parts that ship to customers.
FAQ
Frequently asked questions
Which is more accurate, SLA or MJF?
SLA is more accurate at ±0.2mm compared to MJF at ±0.3mm. SLA also delivers finer feature resolution at 25 microns vs 80 microns on MJF. For dimensional validation and snap-fit clearances, SLA is the better choice.
Which is stronger, SLA or MJF parts?
MJF Nylon PA12 is stronger for structural applications with 48 MPa tensile strength and isotropic properties. Most SLA resins are more brittle, though Tough 2K (40 MPa, 79% elongation) approaches nylon-like toughness.
Can I use SLA parts for production?
SLA is typically used for prototyping, presentation models, and low-volume specialty parts. For production runs of 50+ parts, MJF is more cost-effective and delivers better batch consistency. SLA excels for casting patterns, medical models, and visual parts.
What surface finish does SLA vs MJF produce?
SLA produces the smoothest surface in 3D printing at 2–3 Ra μm — nearly injection-mold smooth. MJF produces a matte, slightly grainy surface at 10 Ra μm. SLA is the choice when appearance matters.
More comparisons
MJF
Injection molding vs 3D printing — which one is right for your volume?
MJF
CNC machining vs 3D printing — subtractive vs additive.
SLA vs FDM
Resin vs filament 3D printing — SLA vs FDM for real-world parts.
MJF
SLS vs MJF — two powder-bed nylon processes, different trade-offs.
FDM
FDM vs CNC — when to print plastic, when to mill it.
MJF
MJF vs urethane casting — two paths to low-volume production.
FDM
3D printing for prototyping vs production — how the choices change.
FDM
PLA vs ABS — the two classic FDM filaments compared.
FDM
PETG vs ASA — indoor workhorse vs outdoor champion.
MJF
Nylon PA12 vs aluminum — when printed nylon replaces machined metal.
FDM vs SLA
FDM vs SLA — which 3D printing technology is right for your part?
FDM vs MJF
FDM vs MJF — cost-effective prototyping vs production-grade nylon.
FDM vs Industrial SLA
FDM vs Industrial SLA — two paths to large-format 3D printing.
MJF
MJF vs injection molding — when does 3D printing make more sense?
FDM vs SLA vs MJF
FDM vs SLA vs MJF — the complete 3D printing technology comparison.
FDM
PLA vs PETG — choosing the right FDM material.
MJF
Nylon PA12 vs PA11 — choosing the right MJF production material.
Ready to start production?
Upload your CAD file and get a quote in minutes — or talk to our engineers about your next production run.