Hacker News new | ask | show | jobs
by dmos62 1933 days ago
How come a magnet attracts plastic particles?
2 comments
dmos62 1933 days ago
To answer my own question. It's vegetable oil mixed with magnetic powder. It's the oil that attracts plastic, but it's the magnetic powder that let's you collect it with a magnet.
link
hyperman1 1933 days ago
As I understand it, he 'glues' metal to the plastic. The magnet picks up the metal, and the glued-on plastic comes along for the ride.

Now anyone with basic chemical knowledge will probably shoot me for abusing the word glued like this, so feel free to correct.

link