Making a ring from brittle purple gold
NileRed · Demo · 53 min · 2023 · YouTube title: Making purple gold
Why it's here
HN mentions it as a fascinating example of chemistry persistence and as something people learned from, such as discovering purple gold exists.
What it covers
NileRed tries to make a ring from pure purple gold, a gold-aluminium intermetallic that is brittle and hard to work with. The 53-minute video follows the chemistry and many failed attempts before he produces a finished ring.