Natural brilliant blue food coloring wrung out of red cabbage

It may seem like a basic color, but blue is actually rather rare in the natural world. That complicates the search for natural blue food colorings, but now a team of scientists has found a promising candidate hiding in red cabbage.Continue ReadingCateg… Continue reading Natural brilliant blue food coloring wrung out of red cabbage

Scientists Identify a Medieval Artist by the Blue Gemstone in Her Teeth

“The discovery of lapis lazuli in the dental calculus of an 11th-century religious woman is without precedent in the European medieval archaeological record.” Continue reading Scientists Identify a Medieval Artist by the Blue Gemstone in Her Teeth

Printing Bed Off-Kilter? Blu-Tack To The Rescue!

For all their applications, 3D printers can be finicky machines. From extruder problems, misaligned or missing layers, to finding an overnight print turned into a tangled mess, and that’s all assuming your printer bed is perfectly leveled. [Ricardo de Azambuja’s] new linear delta printer was frustrating him. No matter what he did, it wouldn’t retain the bed leveling calibration, so he had to improvise — Blu-Tack to the rescue.

It turns out [Azambuja]’s problem was so bad that the filament wouldn’t even attempt to adhere to the printing bed. So, he turned to Printrun Proterface and a combination of its …read more

Continue reading Printing Bed Off-Kilter? Blu-Tack To The Rescue!