The Final 50%: Why Washing and Curing Matter as Much as Printing
Most beginners think a successful resin print ends when the build plate lifts from the vat. In reality, washing and curing account for roughly half the work — and half the failure points. This guide covers the complete post-processing pipeline.
Step 1: Removing the Print
- Use a plastic scraper to avoid scratching the build plate
- For stubborn prints, soak in warm water (40–50°C) for 2–3 minutes
- Wear nitrile gloves — uncured resin is a skin irritant
Step 2: Washing
| Method | Solvent | Time | Pros | Cons |
|---|---|---|---|---|
| IPA | ≥95% IPA | 3–5 min | Fast evaporation | Flammable, cost |
| Water Wash | Water + detergent | 5–10 min | Non-toxic | Water-washable resin only |
| Ultrasonic | IPA or water | 2–3 min | Deep clean | May damage thin supports |
Pro tip: Use two-stage washing — dirty rinse first, then clean rinse. This extends solvent life significantly.
Step 3: Drying
- Air-dry 10–15 minutes after washing
- Use compressed air for internal cavities
- Never cure a wet print — trapped solvent causes clouding
Step 4: Removing Supports
- Cut supports before full curing — green-state resin is softer
- Use flush cutters for thick supports, X-Acto knife for fine connections
Step 5: UV Curing
| Parameter | Small (<5cm) | Medium (5–15cm) | Large (>15cm) |
|---|---|---|---|
| Time (405nm) | 3–5 min | 6–10 min | 10–15 min |
| Rotation | Halfway | Continuous | Continuous |
Common Mistakes
- White residue — Not fully dried. Use compressed air.
- Sticky surface — Under-washed. Rewash and re-cure.
- Yellowing — Use UV-resistant clear coat for display pieces.
- Brittle parts — Over-cured. Reduce curing time.
Recommended Resins
Start with quality resins. The ANTINSKY Standard Lite Resin offers low odor and easy washability. For functional parts, try ANTINSKY ABS-Like Resin. Browse the full collection at InnoStation 3D's Resin Shop.