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Electomagnetic help!!! How to build a small electromagnet that holds 20-25 pounds? Answered

I want to build an electromagnet that holds 15-25 pounds but is small enough to strap three of them on my forearm. Because it will be on my body, I want to make the magnet in a way that won't be very hot. I'm kinda a noob at this kind of thing, so please be specific!!! Also, would a doughnut shaped electromagnet work? If you have any questions or anything that needs to be clarified, please comment and I'll try to explain in greater detail. If you've read this far, thank you so much, and please help!!!! God bless

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Josehf Murchison
Josehf Murchison

4 years ago

Well just to hold 25 lb in place 800 watts plus efficiency 50 to 80 % very heavy. Lighten the shield.

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Yonatan24
Yonatan24

4 years ago

Something like this maybe?:

https://www.youtube.com/watch?v=OqLi6lrOCzs

I doubt you'll able to make it very lightweight, but maybe that can help

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Kiteman
Kiteman

4 years ago

Oh, please tell me you're building a suit to climb steel girders?

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LanceS30
LanceS30

Answer 4 years ago

Actually, I'm making a captain america shield not unlike the one shown here:

http://www.thehacksmith.ca/captain-america-electromagnet-shield/

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Quadrifoglio
Quadrifoglio

Answer 4 years ago

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Quadrifoglio
Quadrifoglio

Answer 4 years ago

http://www.hhenriksen.com/rebs/climbing

"The Magnetic Climbing System is used for efficiently climbing magnetic/metal surfaces. The system can provide access to very high objects such as some container ships." ...it could happen..

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Downunder35m
Downunder35m

4 years ago

If you would have checked what is available in the commercial area you would have realised that such magnets are heavy (and big).
Then there is the problem of power - strong magnets need a lot of it.
Even if you find magnets strong enough to hold your weight plus batteries - you won't be strong enough to do more than sitting on the floor.