When it comes to 3D printing with liquid resin, the curing process is essential for achieving strong and durable 3D prints. Curing involves exposing the printed object to a UV light, which causes the liquid resin to harden and solidify. This post-processing step is critical for ensuring that your 3D prints are fully cured and have the desired properties, such as strength and durability. In this article, we'll provide an introduction to the curing process, including its importance, different curing methods, and the required equipment.
1. Drying the 3D Prints
Before curing your 3D prints, it's important to ensure that they have become completely dry
- Place the 3D prints in a shaded area for 30-60 minutes (you can also use a compressed air gun to fasten the drying process)
- If your 3D prints are hollow, be sure to dry the inner parts as well
2. Curing the 3D Prints
Using a curing lamp
Curing lamp is a device used to cure or harden resin in a 3D printing process. The lamp emits UV light, which triggers the photochemical reaction that solidifies the liquid resin into a solid form.
- Curing prints for about 30 mins (longer or shorter based on model size and geometry)
- Using a 405nm UV curing unit ensures even and complete curing, as every part of the model receives equal exposure to UV light.
- Phrozen offers two curing devices: Wash and Cure Kit, and Phrozen Cure Mega S
Using direct sunlight
- Placing 3D prints under direct sunlight for at least one day for optimal result
- Turn the 3D prints around every every few hours so every part of the model is exposed to UV light
Sunlight may not provide an even or consistent UV light source. As a consequence, uneven curing and discoloration can occur in your 3D prints.