form-fit(s) system


The Form-Fit construction system presents an innovative approach to achieving full geometric and material optimization of load-bearing elements through precise laser-cutting of individual plates, diverging from traditional cold forming techniques. This workshop serves as an introduction to the theoretical framework underpinning the design of load-bearing structures with developable surfaces and the implementation of interlocking connections using an assembly-aware approach. Participants will delve into the utilization of computational design algorithms to generate geometry variations adhering to this construction principle. Additionally, they will be introduced to essential design tools to facilitate a seamless workflow, encompassing the design of complex geometries and integration of detailing for realization.

The workshop syllabus is structured into three main categories: Theoretical Frameworks (3 hours), Computational Tools (12 hours), and Prototyping (3 hours).


  • Gain a comprehensive understanding of designing load-bearing structures using developable surfaces and interlocking connections.
  • Acquire proficiency in employing computational design algorithms to generate geometry variations.
  • Develop skills in utilizing design tools to streamline the workflow from complex geometry design to fabrication and assembly.
  • Explore different levels of complexity in geometry by defining mounting positions and additional functions.
  • Engage in hands-on fabrication and assembly exercises with flat sheet materials.
  • Produce an assembled element as a culmination of the workshop experience.

Theoretical Foundations:

  • Overview of form-fit construction systems and their advantages.
  • Principles of designing load-bearing structures with developable surfaces.
  • Understanding interlocking connections and their significance in assembly-aware design.

Computational Design:

  • Introduction to computational design algorithms for generating geometry variations based on cross section input
  • Hands-on exercises to implement computational design principles.
  • Exploring design parameters and constraints for optimization.
  • Integration of detailing for fabrication and assembly.

Application/ Fabrication and Assembly:

  • Practical exercises in laser-cutting individual plates.
  • Hands-on assembly of fabricated elements.
  • Troubleshooting common fabrication and assembly challenges.
  • Collaborative design exercise to apply workshop principles.
  • Presentation and discussion of the final assembled element.

Workshop skill requirements:

The workshop is open to all applicants with a basic understanding and skills in computational design. No previous extensive knowledge is required. The participants will receive lectures and classes to be introduced to the workshop’s topics, softwares and tools.

Digital Plugins: Rhino and Grasshopper, Weaverbird, RhinoNest

Hardware: 8 GB memory (RAM) or more, At least 600 MB space in the hard drive, We recommend a compatible video card for OpenGL 4.1.

Operational System: Windows 10, 8.1 or 7 SP2 (Grasshopper 3D is only currently available for the Windows operating system. For this reason, every student is required to have an installation of Windows).Note: If you have an Apple computer, it is recommended that you install Windows on Boot Camp which will perform better than Parallels or VMWare.

Workshop Leaders

Mobin Moussavi, University of Kassel

Seyed Mobin is a Research Associate (and doctoral candidate) at the Tragwerksentwurf (TWE) at the University of Kassel. His PhD focus is about designing lightweight steel structures though elastic deformation and digital detailing. He holds a 5-year architectural engineering degree, as well as a master’s in science from Integrative Technologies and Architectural Design Research program (ITECH) at University of Stuttgart. In his master thesis “Design based on availability”, he introduces a design methodology for corrugated shell structures from folded sheet metal of variable geometries and properties, in which the design goal adapts to available material. Robotic fabrication of the project included object recognition, metal sheet folding and consideration of different metal spring back behavior. His workshop experience includes holding IAAC summer school on reuse with soft robotic and form-finding workshops as part of University of Kassel for master degree students.