What is FDM?
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FDM capabilities
| Requirement | Desktop FDM | Industrial FDM |
|---|---|---|
| Maximum Build size | 500 x 500 x 500 mm | 406 x 355 x 406 mm |
| Standard lead time | 2 business days | 3 business days |
| Dimensional accuracy | ± 0.5% ; lower limit ± 0.5 mm | ± 0.25% ; a lower limit: ± 0.25 mm |
| Layer height | 100-300 μm | 100-300 μm |
| Infill | 20-100% | Ultra-light, Light, Solid |
Materials
Polylactic Acid- PLA
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Polylactic Acid- PLA
| Type | Plastic |
| Material Name | Prototyping PLA |
| Mechanical properties | |
|---|---|
| Ultimate tensile strength | 47 - 64 MPa |
| Yield strength | 45 - 69 MPa |
| Young’s modulus (modulus of elasticity) | 2.35 - 2.7 GPa |
| Thermal properties | |
|---|---|
| Type | Plastic |
| Material Name | Prototyping PLA |
Materials
Surface finishing
Guideline
Design guidelines for SLS
The table below summarizes the recommended and technically feasible values for the most common features encountered in 3D printed parts.
| Feature | Feature |
|---|---|
| Unsupported walls | 1.0 mm (0.040”) |
| Supported walls | 0.8 mm (0.031”) |
| Minimum detail size | 0.8 mm (0.031”) |
| Minimum hole size | 1.0 mm (0.040”) |
| Moving parts | 0.5 mm (0.020”) between moving surfaces |
| Assembly clearance | 0.4 mm (0.016”) between moving surfaces |
| Maximum wall thickness | 20 mm (0.8”) Thicker parts must be hollowed with and at least two escape holes for powder removal with a min. diameter of 8mm(0.3”) |