How would I make a magnet/electromagnet strong enough to lift a drum?

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    Drum Lift
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Discussion Overview

The discussion revolves around the feasibility of creating a magnet or electromagnet capable of levitating a snare drum for a school event. Participants explore the theoretical and practical aspects of magnetism, including stability and design considerations.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions the possibility of levitating a drum with a simple magnet, citing instability as a significant issue.
  • Another participant suggests that levitation requires complex systems, such as varying magnetic coils, as seen in levitating globe toys.
  • A participant proposes using larger metal plates to stabilize the levitation, noting the dimensions of the snare drum and its weight.
  • There is a discussion about the challenges of lifting objects with an electromagnet when there is a gap between the magnet and the object, emphasizing that contact lifting is straightforward compared to levitation.
  • One participant recommends using thin wires for an illusion of levitation, suggesting that this method is more reliable and commonly used by illusionists.
  • Concerns are raised about connecting an electromagnet to mains power, with a warning to avoid it without sufficient knowledge.

Areas of Agreement / Disagreement

Participants express differing views on the feasibility of levitating the drum with a magnet, with some emphasizing the challenges and instability, while others propose alternative methods and solutions. The discussion remains unresolved regarding the practical implementation of the ideas presented.

Contextual Notes

Participants mention various assumptions about the stability of levitation, the need for additional support, and the technical challenges of using mains power with electromagnets. These factors contribute to the complexity of the proposed solutions.

SeaCrane1
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My friend came to me today with an interesting problem. He wants to make some sort of magnet that will make the school band's drumline's snare drums, in essence, levitate. This is for a big school event and he wants to do something special this year. Is it possible to make such a magnet? If so, can it be made with a 4'x4' piece of sheet metal? Thanks ahead of time, SeaCrane1
 
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Levitate is tricky - there is a famous law that says you can't do this with a simple magnet, it's unstable.

Those levitating globe toys use a computer and a set of varying magnetic coils to keep the globe in the centre. It's difficult to do over a larger area and the base has to be much larger than the thing you are levitating
 
Which is why the metal plates would be approximately 3.5 times the diameter of the snare drums. The drums are about 13" in diameter, 9" tall, and weigh between 10-14 lbs. If the magnet would truly be unstable, then some support could be added. All I really want to know is if a magnet could be made to lift the drum.
 
how does one put a electro-magnet to the mains, keeping in mind that i have built a Graetz bridge?
 
Lifting a steel object once an electromagnet is actually in contact is very easy. To work over a gap of as little as a cm is hard and, as has been mentioned, unstable.
If you want to produce Levitation then use a few thin wires which will achieve the illusion and be more reliable. With the right lighting, it will be fine. It's what all illusonists use and they should know what's best.

Steer clear of 'the mains', my friend, until you really know what you are doing. The diode bridge rectifier is the least of your concerns.
 

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