! MAGNETIC WELDING GROUND MADE OF STAINLESS STEEL !

**orioncons36** · Jul 18, 2020, 09:57 AM

Cool idea for Magnetic Welding Ground made of stainless steel.

**katy** · Jul 21, 2020, 09:39 PM

What are the magnets from?

**orioncons36** · Jul 26, 2020, 11:21 PM

They are speaker magnets.

**Duke_of_URL** · Aug 17, 2020, 07:11 PM

Nice project!

I've noticed, when I weld too close to rare earth magnets, they'll get too hot and lose their magnetism.

**katy** · Aug 18, 2020, 01:36 PM

Originally Posted by Duke_of_URL

Nice project!

I've noticed, when I weld too close to rare earth magnets, they'll get too hot and lose their magnetism.

Will putting them in the freezer restore the magnetism?

**Duke_of_URL** · Aug 18, 2020, 03:19 PM

Originally Posted by katy

Will putting them in the freezer restore the magnetism?

Unfortunately, no, since the magnetic domains rotated while hot then cooled in their final direction. I suspect a powerful electromagnet can be used to reverse the process, but might not be worth the trouble for a small magnet.

**orioncons36** · Aug 18, 2020, 03:34 PM

Thank You. These were just standard speaker magnets and as you can see the welding didn't affect strength much, if any. Works great!

**jdurand** · Aug 18, 2020, 08:46 PM

Many magnets are bad at higher temperatures. A client we helped design parts for uses decently sized N42 magnets and they're only good to 80C and then start forgetting where North and South are.