[Editor’s note: Sorry I’ve been so delinquent in my posts. I promise to do a better job of keeping the blog current. If you have any suggestions for future posts, please feel free to send them to me (warrenginn at gmail dot com). Thanks for your support!]
For those of you keeping score at home, you know that I’ve been a big fan of Protomold and their most-excellent part samples/teaching aids. Last year saw the introduction of the Protomold Torus featuring a plethora of common injection molded features crammed into a lovely plastic doughnut for you to display on your desks:
The Protogami demonstrate the interaction of materials of varying durometers and surface finishes. It is made up of 3-dimensional “flexagons,” creating a kaleidocycle that exposes a different set of faces with each turn. An informational guide, highlighting the materials, finishes and design features used, is included with the Protogami components and assembly instructions.
The base structure of 6 polypropylene parts that snap together serve as an excellent example of living hinges, clips, slots and pockets. The snap-in plaques represent 6 different materials (polycarbonate, ABS, HDPE, acetal, glass-filled nylon and TPE) featuring 4 different surface finishes as well as a fifth part that you can snap in half to experience how the material breaks. A very nice addition to their portfolio.
You can check out Protomold designer Kevin Crystal’s blog post on the Protogami.