Makelab's dimensional accuracy varies by technology and part geometry:
1. FDM (Fused Deposition Modeling)
Typical tolerance: ±0.2mm to ±0.5mm for most dimensions
Best case: ±0.1mm on simple, well-supported geometry
Variables: Layer height, material shrinkage, part orientation, post-processing
2. SLA (Stereolithography)
Typical tolerance: ±0.1mm to ±0.2mm for most dimensions
Best case: ±0.05mm on small, detailed parts
Variables: Resin type, part size, support placement
3. Industrial SLA
Typical tolerance: ±0.1mm to ±0.3mm depending on size
Best case: ±0.05mm on smaller sections of large parts
Variables: Part size (larger parts may experience more deviation), geometry complexity
4. Factors Affecting Tolerance
Material shrinkage during cooling or curing
Part orientation during printing
Support removal may affect surface finish on contact points
Post-processing (sanding, coating) reduces precision
Environmental conditions (humidity, temperature)
5. When Tight Tolerances Matter
For precision assemblies, mating parts, or functional mechanisms, communicate your tolerance requirements during quoting. Our engineering team can optimize orientation, support placement, and material selection.
6. When to Use CNC Instead
If you need tolerances tighter than ±0.05mm consistently, consider CNC machining for final parts or critical dimensions.
👉 For precision applications, submit the intake form with your tolerance requirements and our team will confirm feasibility.
Learn more on our website:
Full Design Guidelines — comprehensive rules by technology
File Requirements — formats, mesh settings, export tips
Browse Materials — find the right material for your application