Being gifted with seeing all the colors of the light spectrum, humans started coloring things since ancient times, using different combinations of plant and rock dies. Now, we have dozens of solutions ...

[Bob] needed an oven for powder coating metal parts. Commercial ovens can cost thousands of dollars, which [Bob] didn’t have. He did have an rusty old file cabinet though. And thus, a plan was born.

The authors experiment with a resonant acoustic mixer as a method for dry powder coating. Efficient handling and transport of fine-particle powders can be difficult because of the highly cohesive ...