Material:Magnets: Difference between revisions
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Most [[Ferrous Metals|ferrous metals]] (those containing [[iron]]) as well as [[cobalt]] and [[nickel]] are magnetizable. High-quality [[Material:Stainless Steel|stainless steel]] is not! | Most [[Ferrous Metals|ferrous metals]] (those containing [[iron]]) as well as [[cobalt]] and [[nickel]] are magnetizable. High-quality [[Material:Stainless Steel|stainless steel]] is not! | ||
== Corrosion == | |||
[[File:corroding magnets.JPG|200 px|right|thumb|two corroding magnets and an intact one (on the left)]] | |||
Cheap neodymium magnets are often prone to decaying after a few months of exposure even to "normal" inside air moisture levels so you might want to coat them in something that can protect them.<sup> [https://en.wikipedia.org/wiki/Neodymium_magnet#Corrosion_problems]</sup> | |||
== Sourcing == | == Sourcing == | ||
We only have some salvaged hard drive or speaker magnets on site right now so you may want to buy your own: | We only have some salvaged hard drive or speaker magnets on site right now so you may want to buy your own: | ||
* [https://www.supermagnete.de/ Supermagnete.de] seems to be a good source, recommended by André | * [https://www.supermagnete.de/ Supermagnete.de] seems to be a good source, recommended by André | ||
Latest revision as of 14:10, 10 July 2018
You can salvage very strong magnets from old hard disk drives. Patrick also embedded a few ball-shaped neodymium magnets into his 3D printed bike light holder.
Most ferrous metals (those containing iron) as well as cobalt and nickel are magnetizable. High-quality stainless steel is not!
Corrosion
Cheap neodymium magnets are often prone to decaying after a few months of exposure even to "normal" inside air moisture levels so you might want to coat them in something that can protect them. [1]
Sourcing
We only have some salvaged hard drive or speaker magnets on site right now so you may want to buy your own:
- Supermagnete.de seems to be a good source, recommended by André
