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…

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…

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