The natural occurring iron is airways red, due to oxidation.
The deposits in your magnet are black with shiny silver bits. That comes from particles thrown from grinding/cutting and usually from steel alloys.
If it was truly just picking up particles from the air, it would look like a mars rock. And you would have health issues, with that high of an iron content in your breathable air.
HapaJoe on October 8th, 2017 at 18:14 UTC »
Are you doing something that involves a lot of iron dust in your garage?
bisjac on October 8th, 2017 at 19:04 UTC »
Collect it and melt it with a torch. And do so every few months. In a few years you can make a little ball you can say came from the air.
Store current ball on the magnet itself to assist in more surface area collection :p
Serves no purpose at all. But fun to do.
Deckard_Pain on October 8th, 2017 at 19:07 UTC »
The natural occurring iron is airways red, due to oxidation.
The deposits in your magnet are black with shiny silver bits. That comes from particles thrown from grinding/cutting and usually from steel alloys.
If it was truly just picking up particles from the air, it would look like a mars rock. And you would have health issues, with that high of an iron content in your breathable air.