This timelapse is called 3D Printer Time-Lapse, and was created by an awesome Primelapse user on YouTube.
3D Printing is a process of making three dimensional solid objects from a digital file. The creation of a 3D printed object is achieved by using an additive process. With this process the object is created by laying down layers of material until the entire object is created. Each of these layers represents a thinly sliced horizontal cross-section of the object. this video demonstrates this additive process. A 3D printer can make a product immediately, allowing you to test it, adjust the design, and work out any issues more quickly.
Design & Drafting Technology http://www.ucmo.edu/cadd/
In addition to its use to demonstrate the additive process of 3D printing, this video was produced as a teaching demonstration of time-lapse imaging for the photography majors at UCM. The Triggertrap mobile software can be used as a camera intervalometer to produce video that presents action that has too long a time span for observation.
The TimeWarp mode allows smooth acceleration and deceleration of the action in this video. This video has around 800 frames that were taken at intervals from between 2 seconds to 30 seconds between frames resulting in a 240x compression of normal speed.
UCM Photography majors have access to Triggertrap Mobile Kits for Canon and Nikon cameras thanks to an Opportunity Grant funded by the UCM Foundation.