3D Printed Assemblies

One of the advantages of additive manufacturing is the potential to create fully assembled machines. I was playing with this concept in OpenSCAD and made a Sarrus linkage that is printed almost fully assembled. As a rule of thumb, typical FDM 3D printers can print overhangs without any support structures provided the angle of the overhang is 45 degrees or steeper. Taking advantage of this capability, the hinges are made from conical pins that mesh inside conical holes. The linkage is printed with the hinges…

Data-driven API Creation and Processing in Node.js

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Data-driven web services API processing greatly simplifies supporting, maintaining, and documenting many different APIs.

Designing Web Applications for Digital Fabrication

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Digital fabrication applications make mass customization possible for general audiences. Nonetheless, there are still unique challenges in developing digital fabrication web applications.

Intro to Guerrilla CNC Machining and Resin Casting

2013-03-10 19.13.20

Building mechanical devices is hard.  Unlike software, there are no compilers to effortlessly convert your design into a functioning system.  When I first decided to try building hardware, I was hopeful that hobbyist 3D printers were good enough for prototyping machines.  I purchased an Ultimaker and spent a few months trying to realize my mechanical ideas.  Although they are great for turning out larger models, as well as frames and mounting hardware, the current wave of affordable 3D printers don’t really have the precision to make…


Dial - A - Mustache

This slightly ridiculous project was made for my brother and his wife as an engagement present.  Like many young couples, mustaches played an important role in their courtship. The mirror is a one way mirror, covering a set of six clear acrylic plates. Each plate is engraved with a different mustache pattern and lit from the side with LEDs.  Total internal reflection traps most of the light inside the plate until it reaches an engraved edge, causing it to glow brightly.  The sides of the…

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