How Marionette 3D printer works.
yewtu.be
Made a bunch of improvements to where I actually use it to print kid toys. The printing starts slow to help the first layer stick; it speeds up later in the video. I had to dub it over because the original audio recorded by the phone was too hard to understand. Some other videos: The Z mechanism: https://www.youtube.com/watch?v=tocf8PchpOw Speedbenchy in 3:56: https://www.youtube.com/watch?v=dojxlFKVThY Marionette mechanism by itself: https://www.youtube.com/watch?v=2-ZcL9JBopk

This video by dizekat shows a new kind of kinematic system based on string. It should be possible to make very fast but cheap printers like this due to low inertia of the system. Very interesting!