Why it worked
The video likely performed well due to its unconventional and slightly risky nature, appealing to a niche audience interested in machining hacks and experimental techniques. The clear demonstration and honest commentary add to its shareability.
Summary
The video demonstrates milling aluminum with a 3/4" tap, which is an unconventional method. The creator notes that while it worked better than expected, it's a "stupid" method and likely only effective on the edge of the material due to the tap's flutes needing something to grip.