Low-shrinkage filament supports precision by reducing dimensional drift, but geometry, cooling and orientation still matter. The material must match the temperature and load requirement.
Causes of shrinkage
- Polymer crystallisation.
- Cooling rate.
- Large solid sections.
- Asymmetric geometry.
Process control
Use stable chamber temperature, even cooling and calibrated flow. Measure the part after full cooling, not immediately.
Validation
- Critical dimensions.
- Hole positions.
- Flatness.
- Repeatability.
| Factor | Effect | Control |
|---|---|---|
| Cooling | Contraction | Chamber |
| Flow | Bias | Calibration |
| Geometry | Warp | Design |
| Material | Shrink rate | Selection |
Common engineering mistakes
- Choosing material only.
- Measuring hot.
- Ignoring orientation.
- Using uneven cooling.
- One part as proof.
Buyer checklist
- What tolerance is required?
- Which dimensions are critical?
- Is cooling uniform?
- Was the part measured after cooling?
- Is the error repeatable?
Send precision requirements through our quote form.