There are indications that more than three thousand years ago some ancient Greeks might have made and used nonstick pans to bake bread. Mycenaean Greek skillets had a cooking side covered with tiny holes that archaeologists believed helped to evenly spread oil over the griddle so that dough wouldn’t stick while being cooked. In the modern history of nonstick coating technology, while working at DuPont in 1938 Roy Plunkett accidentally invented polytetrafluoroethylene (PTFE). Better known…
Laser engraving is a procedure which vaporizes substances into fumes. The laser has to hit localized regions with enormous levels of electricity to create the high heat necessary for vaporization. Within this guide, you will discover detailed info about how laser engraving works. But here’s a brief video which reveals that the laser engraving process in actions. In this movie, you will observe the high-quality contrasts, the signalling speed, as well as the fumes created…