Abstract

Injection molding is the most common production method for polymer parts. Injection molding is not, however, an easy method to implement in design labs due to size and cost of machines, steel molds, and knowledgeable fabrication staff for operation. Recent developments in desktop injection molding machines and desktop 3D printing allow injection molding at a scale that is possible in a design lab, workshop, or studio. Using polylactic acid (PLA) as the injected polymer has benefits of access, consistency, and sustainability in a design lab. Testing PLA injection molding with 3D printed molds proved that viable parts could be produced. Experiential learning with injection-molded PLA production provides students with hands-on design and manufacturing practice, leading to increased understanding of product design, part design, material properties, and design for manufacturing.