Closed Loop °*

BCL * Recycled Plastic Robotic 3D Printing

TYPE Material Research & Public Installation

DATE 2022 - 2024

LOCATION Ithaca 

DESIGN LEADDavid Costanza

DESIGN TEAM Zekai Lin
Riley Wines
Jonathan Wilmers

OVERVIEW Closed Loop is a robotically 3D printed bio-plastic bench. The collective bench offers a place of pause and rest along primary pedestrian routes on campus. Critically, this research utilizes a public furniture object to investigate issues of manufacturing and scalability while exploring the potential of bio-plastics as a structural material for the construction of building components. Thus, the ambition of the project is both cultural/societal and technical. Culturally, the project aims to make connections between often discrete groups or individuals by producing a piece of shared public furniture. Technically, the project investigates the use of bio-plastics with the automation of production offered by robotic 3D printing. 

The bench’s geometry organizes the seating areas into three smaller sections that are socially distanced from one another while belonging to the same closed loop. The bench is made of 6 self-similar components that were printed independently and assembled on-site. The triangular cross-section produces a flat surface for the seating component and then rotates to an inverted triangle to elevate from the ground and divide the seating areas. 





Isometric View With Earth Screws
Section
Morphological Evolution

Part To Part Connection Detail
Robotic 3D Printing Process


Concept Diagram
 

Custom Built Aluminum Heated And Adjustable Build Plate
Cross-Sectional Parameters
Spring Pin Joint Detail 

Turnbuckle Compression Ring Detail 
Connection Detail with Spring Pins and Turnbuckle 
Rotation Of The Cross Sections While Maintaining The Circular Compression Ring 


Sites In The Arts Quad At Cornell University  


Baseplate Detail 


Connection Seam