Exactly, so this sentence is incorrect: > Ballpoint pen tips are microscopic tun... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

margalabargala 23 days ago | parent | context | favorite | on: Why jet engines aren't made in China

Exactly, so this sentence is incorrect:

> Ballpoint pen tips are microscopic tungsten carbide ball held inside ultra-thin steel sockets

OneDonOne 23 days ago [–]

Yes indeed, you are correct. My mistake.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact