With the increased use of digital technology, it is becoming rare to produce physical models, but certain things cannot be verified without such a physical check. In that respect, ARRK's design models employ a wide range of expertise, using both standard and digital fabrication methods, as well as surface treatment.

In addition to fabrication, ARRK also has painting and printing surface treatment equipment at almost every branch. This allows the final process for the design model to be carried out smoothly at each location, thereby shortening delivery time.