“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”
I went on about this before, but got distracted by the historical angle so missed the price/open-source angle.
Something that we seriously need to avoid is a situation where (as is the case with 2D printers), the printer is basically just a conduit for selling chronically over-priced and proprietary consumables.
This particular development, as well as knocking the bottom of of proprietary pricing and being open-sourced, has the added advantage that being made out of sugar and maltose, you can eat your mistakes… though there is a bit of ceramic in there as well, so nutritionally it’s the same as also eating the plates.
Cartestian Robot Roundup.
Pseudo Machine Art
Physical Pixels
Lego-Based Copy-Monopoly Liberation 
Reprap Roundup.
Generative 3D printed Art
New Reprap Variant
Software: The Glue of the Apocalypse
3D Printed Records
$300 worth of Lab Gear for freeish
On Addiction
And The Void Mooned Back...
The Spirit Of The World
A Machine to Steal Souls
More Anti Digital
Thync
Robotic Sensory Loops and Whatnot
Post-Scarcity Link-Dump
Servo Bender
This particular development, as well as knocking the bottom of of proprietary pricing and being open-sourced, has the added advantage that being made out of sugar and maltose, you can eat your mistakes… though there is a bit of ceramic in there as well, so nutritionally it’s the same as also eating the plates.