A University of Washington engineering professor has come up with a new goop for his 3D printer that costs 1/30 - 1/50 of the authorized goop, using a mix of clay, sugar and nutritional supplements, then open sourced their formula. Basically, these guys are the inkjet cartridge refillers of the 3D era:
About five years ago, Mark Ganter, a UW mechanical engineering professor and longtime practitioner of 3-D printing, became frustrated with the high cost of commercial materials and began experimenting with his own formulas. He and his students gradually developed a home-brew approach, replacing a proprietary mix with artists' ceramic powder blended with sugar and maltodextrin, a nutritional supplement. The results are printed in a recent issue of Ceramics Monthly. Co-authors are Duane Storti, UW associate professor of mechanical engineering, and Ben Utela, a former UW doctoral student.
"Normally these supplies cost $30 to $50 a pound. Our materials cost less than a dollar a pound," said Ganter. He said he wants to distribute the free recipes in order to democratize 3-D printing and expand the range of printable objects.
Glitzy three-dimensional printers have become common in the industrial world, churning out fast 3-D prototypes of everything from airplane parts to running shoes. But the machines also are becoming popular among artists, hobbyists and educational institutions.
If you think that your phone may have been hacked so that your adversaries can watch you through the cameras and listen through the mics, one way to solve the problem is to remove the cameras and microphones, and only use the phone with a headset that you unplug when it’s not in use.
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