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Mystery of the Demagnetizer | What's inside it? How does it work? (Patreon)

Published:
2021-09-26 17:48:00
Imported:
2026-06
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Content

I honestly did not know how the magnetizer/demagnetizer tool worked before starting on this video. The online answers I could find were vague (or just wrong) in explaining how it works.

So I had to do my own investigation and why not document it on video. I show some basic tests and some advanced 3D teslameter measurements. I then open the tool and finally figure it all out through a rendering in the FEMM program.

The animations in this video were unusually tedious for an amateur like me to make - but so worth it. Helped me realize how it works. And hopefully help you see it too.

I even end up showing how the tool is not needed if you just have a bar magnet!

Files

Previews only

Mystery of the Demagnetizer | What's inside? How does it work?

I have always wondered how the inexpensive magnetizer-demagnetizer tool works. What's inside it? And why are there stairs inside the demagnetizer opening? According to most sources the stairs are important, but the explanations are vague at best. In this video, I will do some investigation and open the tool to finally figure out how it really works! And show how you don't need the tool if you have a bar magnet... The F71 Teslameter donated in 2018 by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx See how precisely it determines the strength and surprising direction of the Earth's magnetic field at my place: https://youtu.be/Of-_BBHYwRE My Patreon-page: https://www.patreon.com/Brainiac75 Links for some of my other videos: Unboxing a monster magnet: https://youtu.be/yM4Xe2c0B8M Buyer's Guide: Your first neodymium magnet: https://youtu.be/ih-rg6VuJDc Cola is perfect for lowering a laser's power!?!: https://youtu.be/GcpwcpB2Z6A Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 10:18 "Martian Cowboy" Kevin MacLeod (incompetech.com) ISRC: USUAN1100349 Time codes: 1:06 + 5:16 + 6:15 + 8:06 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 2:36 + 7:10 + 9:28 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 4:11 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 4:52 "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time code: 5:46 "Supernatural" Kevin MacLeod (incompetech.com) ISRC: USUAN1100397 Time code: 6:40 "Stormfront" Kevin MacLeod (incompetech.com) ISRC: USUAN1200043 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:58 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Magnetizer #Demagnetizer #Tool

Comments

TechieSteve

Wow, so annoyingly simple! Thanks for revealing the inner secrets!

Brainiac75
>>68593357

You're welcome! And yes, it is rather annoying. What the video doesn't show is how much I measured all around in the demagnetizer opening. I was looking for the 'irregular' magnetic field that so many websites claim the steps will make x) I was hoping to find some oddly shaped magnets or pole pieces made of iron inside the steps...