Week 3

To-do:

Design and 3D print an object that could not be made subtractively
3D scan an object
Make a scanner




graphine: allotrope of carbon in the form of two dimensional, honey-comb lattice on atomic scale. It is about 100 times stronger than steel, conducts electricity and is nearly transparent
CIE Color Space: characterizes color by a luminesce parameter and two color coordinates. The system offers a more effective way of color measurement than euclidean based approaches
hygrophilic: preferring moist habitats
Catalan surface: spiral-looking surface all of whose planes are parallel to a fixed plane
geodesic: applying the notion of a straight line to curved spaces, used to mean the shortest distance between two nodes on the Earth's surface
Polylactic acid (PLA): biodegradable polyester typically made from corn starch, tapioca roots, or sugarcane. PLA has one of the highest bioplastic consumption volumes in the world
Acrylonitrile butadiene styrene (ABS): thermoplastic polymer, is amorphous and doesn't have a true melting point, can be carninogenic at higher temperatures (~400 °C)
Stereolithography: uses a laser beam to 3D print layer by layer from a liquid polymer that hardens on contact
Continuous Liquid Interface Production (CLIP):photochemical process involving uncured resin, exposure to oxygen, and a light source - it is said to be very fast



Print

I returned to the same shape for this week's assigment, taking it a step further I designed (using Rhino) a dodecahedron illustrative of the fact that a cube can be constructed from its vertices (Steinhaus 1999). I used the Formalabs and 3DWOX to make models at different scales. The first couple of attempts were trying – not enough support, too little resin, excessive support, etc.



Scan

Scanning an object posed its own set of challenges. Sense didn't seem to respond particularly well to my attempts of scanning a bust or small objects (about the size of a handful or less). However it did scan a bottle of Goop soap nicely (inserting an extra "o" for good measure). My dodecahedron didn't pass the Sense size threshold, so I tried to capture the shape using 123D Catch which did not turn out particularly well either.



Scan some more

This 3D heat scan was created in a collaboration with James Penn, a wizard of sorts. The idea behind it was to draw on the visuals heat produces as well as to scan a feature that extends beyond what is visible to the naked eye.
Our set-up included a stepper motor, two breadboards, an arduino, mystery electrical components, and a couple of glasses of whiskey.