3D Printed Straw Connectors V3

About: I'm a Research Engineer at Adobe. Previously, I was a grad student at the Center for Bits and Atoms at MIT Media Lab. Before that, I worked at Instructables, writing code for the website and iOS apps and m...

Another follow up to my original post about a 3D printed straw construction set, I've made a new shape of connector.  This new connector is shaped like a tetrahedral, it joins each straw at an angle of about 109.5 degrees to each other.  This shape is particularly interesting because it is commonly found in nature, most notably in molecules containing carbon.  In fact at the atomic level, diamonds (pure carbon) contain this same repeating tetrahedral configuration shown in figure 5.

I printed this connector with an epilog printer (the grand prize in the Make it Real Challenge!)  I've attached the AutoCAD and stl files below.



    • Tape Contest

      Tape Contest
    • Arduino Contest 2019

      Arduino Contest 2019
    • Trash to Treasure

      Trash to Treasure

    3 Discussions


    6 years ago on Introduction

    This is awesome!! The kids at the school I work for make things with straws for math and science, the teachers use pipe cleaners to hold them together, but as you can imagine that doesn't work the worlds greatest. These would be such the perfect solution! Nice job!


    6 years ago on Introduction

    awesome! you could make giant molecular models with this :D
    if only I had a 3D printer, my life would be so much more awesome.