Liquid resins
Stereolithography is a technology generating parts by adding layers of material. Use of liquid photosensitive materials hardening-off by means of ultraviolet (UV) light.
Photopolymerization
The successive stack of layers measuring up to 0,05 mm allows parts conctruction. At each layer the resin is irradiated with a laser beam which brings the wavelength needed to harden the material. Parts printed with stereolithography need a post-treatment. First they need to be cleaned with a solvent to remove the non-polymerized resin residue and then backed in the oven to finish polymerization for material stability optimization.