Herctrap sent me this link yesterday. Based on the Burr Brown OPA2107 Operational Amplifier, this guy made a small audio amplifier without soldering the parts on a PCB. The soldering...
Dr. Max Whitby, also known as the element collector, makes real life periodic tables. This job is something like a chemistry art. In this video, he melts half a kilogram of silver...
Eras ago, back when people used copper for their tools and weapons, bronze was the ultimate casting metal! Neil Oliver experiments with traditional methods of making a Bronze Age...