Our cooperator recently picks the 3D models of the most recognizable building of two famous universities. One is 18cm long and the other one is 27cm long. The requirement for the model is that the overall size is less than 500 times of the detail size.
Solution
The micro 3D printing process is based on stereolithography (SLA) in which successive layers of photocurable resin are selectively solidified by targeted UV light to fabricate 3D objects.
Each process variant differentiates itself by its source of UV light (laser beam or DLP projector), system layout, and special features deployed to reach micro resolution and tolerances.
Projection Micro Stereolithography (P碌SL) printing is similar to common SLA printing processes, also including supports adding, light curing, cleaning, post-curing and polishing.