Introduction
After testing more than 12 types of resins in our DunaTech lab, we’ve created this guide so you can learn how to use resin in 3D printers efficiently and safely. While FDM printers use filaments like PLA or ABS, resin printers (SLA or DLP) are on another level: they produce much finer details and stunning finishes. However, working with resin requires caution and meticulous post-processing. Let’s get straight to it.
Preparation Before Using Resin
1. Choosing the Right Resin
– **Standard Resins:** Perfect for beginners. Affordable and easy to use.
– **Flexible Resins:** Ideal for parts that need some elasticity.
– **Impact-Resistant Resins:** For durable and functional parts.
– **Translucent or Specialty Resins:** Provide unique finishes but are more expensive.
In our tests, Anycubic’s standard resin performed wonderfully due to its stability and accessible price. Note: Not all resins are compatible with all printers. Check your machine’s specifications.
2. Personal Protection
– Nitrile gloves (never latex, as resin can seep through).
– Mask (preferably with an organic vapor filter).
– Safety goggles to protect against splashes.
We’ve noticed that the fumes from some resins are stronger than others. For example, Elegoo’s UV resins have a more intense smell compared to Anycubic’s.
3. Preparing Your Workspace
– Use a flat surface covered with absorbent paper or a silicone mat.
– Keep the area well-ventilated. Avoid using your printer in closed rooms.
– Have 99% isopropyl alcohol (IPA) and a washing tank on hand.
Step-by-Step Resin Printing
1. Initial Setup
– Ensure the print bed is leveled. In our tests, even a slight tilt can ruin the first layer.
– Fill the resin tank without exceeding the maximum line. Overflow can cause spills.
2. Printing Settings
– Set the appropriate exposure time in the slicer (Chitubox or Lychee). For example:
– Standard resins: 8-12 seconds per layer.
– Rigid resins: 14-18 seconds.
– Adjust the layer height based on the desired detail level:
– 0.05 mm for high resolution.
– 0.1 mm for faster prints.
3. Printing Process
– Start the print and monitor the first few minutes to ensure the first layer adheres properly.
– Avoid opening the resin tank during printing.
Post-Processing Printed Parts
1. Washing
– Remove the part from the plate and submerge it in isopropyl alcohol. In our tests, using an automatic washing station like the Anycubic Wash & Cure saves a lot of time.
– Use a soft brush to remove any uncured resin residue.
2. Curing
– Place the part in a UV curing station. If you don’t have one, you can use direct sunlight, but curing will be slower and less uniform.
– Recommended time: 2-4 minutes under UV light.
3. Finishing
– Sand the parts if necessary. Use fine-grit sandpaper (600-1200) to remove imperfections.
– For a glossy finish, apply a clear varnish.
Troubleshooting and Common Errors
1. Issue: Parts Stuck to the Tank
– **Cause:** Insufficient initial exposure time or uneven tank leveling.
– **Solution:** Increase the base exposure time and check the leveling.
2. Issue: Deformed Parts
– **Cause:** Poor-quality resin or unsuitable room temperature.
– **Solution:** Use fresh resin and keep the room temperature between 20-25°C.
3. Issue: Bubbles in the Print
– **Cause:** Excessive shaking of the resin before use.
– **Solution:** Let the resin rest for a few minutes after shaking it.
FAQ
What type of isopropyl alcohol should I use?
We recommend using 99% alcohol for the best cleaning results. 70% alcohol may leave residue.
Is working with resin dangerous?
Yes, if you don’t take the proper precautions. Always use personal protection and work in a ventilated area.
Do I absolutely need a UV curing station?
It’s not mandatory, but it speeds up the process and improves curing quality. Sunlight works, but it’s not as efficient.
Conclusion
Working with resin for 3D printers opens up a world of possibilities for creating detailed and professional parts, but it demands more care and precision than FDM printers. With proper protection, good resin, and the right settings, you can achieve incredible results. At DunaTech, we’ve found that the key lies in post-processing and choosing quality materials. Have you tried a resin printer yet? Share your results with us!
— The DunaTech Team