Post-curing can improve strength and heat resistance, but only when the resin chemistry, geometry and dimensional limits allow it. More exposure is not automatically better. Validate the process on a representative part before releasing a production recipe.
Start with the chemistry
- Check whether the material actually requires post-curing.
- Separate thermal annealing from UV curing.
- Confirm the supplier’s recommended window.
Control the process
Record temperature, time, UV dose, fixture support and cooling rate. Small changes can alter warpage and colour.
Verify the result
- Measure before and after dimensions.
- Test the loaded feature, not only a coupon.
- Keep a reference part for future batches.
| Process step | What to control | What to record |
|---|---|---|
| Pre-check | Geometry, supports, moisture | Batch and part orientation |
| Cure | Temperature, time, dose | Actual cycle and equipment |
| Cooling | Rate and fixture | Warpage observations |
| Inspection | Dimensions and function | Acceptance result |
Common engineering mistakes
- Curing a part that does not need it.
- Using one coupon for every geometry.
- Ignoring distortion after cooling.
- Mixing UV and thermal cure claims.
- Changing suppliers without revalidation.
Buyer checklist
- Is the material grade confirmed?
- Is the support fixture defined?
- Are before/after dimensions recorded?
- Is the functional feature tested?
- Is the recipe locked for repeat orders?
Send the part geometry, material and target property to our engineering team for a process review.