The Fry-day Amazon product is a low cost 3D printer that uses plant based bioplastic filament, PLA, to build objects by adding layers on top of layers.
The user interface to do this is simpler these days. It got a good review at Hackaday, Review: Monoprice MP Select Mini 3D Printer. The author was impressed that such a low priced 3D printer can use standard G-code and doesn’t require special filament.
It supports ABS and other materials as well.
From the description, “Ready to Print: Unlike most other low-cost 3D printers, this printer ships fully assembled and has already been calibrated at the factory. We even include sample PLA filament and a MicroSD card with preinstalled models, so you can start printing right out of the box!”
Back in 2011, a “Solar Sinter” was shown making 3D printed glass objects directly from sand in Egypt using a solar powered computer to focus sunlight as the process.
Here’s our blog post about it from that time, http://resfree.org/2011/06/29/solar-sinter-makes-glass-items-from-sand/.
An updated version of the Solar Sinter uses finer sand in Morocco and a new computer design to produce objects with more definition.
See the latest video, Solar Sinter – Image Studios, also embedded below.