Introduction: Levitating Platform

In this instructable, I am going to show you how to build a levitating platform with the induction heater from my previous instructable.

Lenz's Law states that the direction of current induced in a conductor by a changing magnetic field due to Faraday's law of induction will be such that it will create a field that opposes the change that produced it.

The induction heater coil is producing an alternating magnetic field that induces eddy currents in the aluminum. The currents flowing through the aluminum produces an opposite magnetic field that repels the coil. A diamagnetic material like copper or pyrolytic graphite would levitate higher. Innovations in super conductors would make this technology incredibly more useful.

Step 1: What You Will Need

1. Induction Heater from my last instructable

2. Aluminum Extrusions with hardware. You can use wood or whatever else you want to build the structure.

3. Wire. I used Litz wire but you can experiment around with wire that you have on hand that is thicker than 14AWG.

4. Aluminum Foil from the grocery store

5. Aluminum armature wire. You can also use solid core coper wire without insulation

6. Fire pad to keep heat from transferring to your table.

7. Terminal Block for connecting the coil to the heater

Step 2: Build Your Coil

Wind your coil and screw into the terminal strip. I used kapton tape to keep it all together. I made my coil with litz wire wound to an inductance of 13uH. You can experiment with different values and shapes. My coil measures 3.8" x 3.8" (96.52mm x 96.52mm).

Step 3: Build Your Support Structure

I used seven 10mm extrusions to build the structure. The hardware slides into the slots of the extrusions and it tightened down.

Step 4: Build Your Platform

Using aluminum armature wire, I made three support legs that wrap around the upright extrusions and then folded 4 layers of aluminum foil to complete the platform. You can use copper instead of aluminum for a platform with more lift. Copper is diamagnetic so it naturally repels magnetic fields.

Step 5: Wingardium Leviosa!

Now you are officially a wizard and can levitate metal! In all seriousness, this is a great project to demonstrate the physics behind Lenz's law and induction. It could be used as a instructional demo for schools, your children, or yourself.

If you liked this, follow me for more and check me out on YouTube. Please consider voting for me in the contests.

Thanks!

Anthony

Comments

author

NICE JOB!!! THE LEVITATION IS SOMETHING MANY OF US WE HAVE BEEN STUDYING FOR YEARS DUE TO FLYING OBJECTS AND OTHER PHYSICAL-CHEMICAL ASPECTS... LONG TIME AGO I DESIGNED A STRANGE FORM OF LEVITATION USING MAGNETIC, ELECTRICAL, AND MATRIX FIELDS AS TECHNOLOGY... YOUR PRINCIPLE IS FABULOUS AND EXPLANATORY TO THE BEGINNERS OF THIS RANGE OF PHYSICS.... CONGRATULATION!!! SCIENTIFIC GREETINGS MY FRIEND!!!

author
Catfaced8 (author)2017-02-02

thumbs up for the AVE ruler

author
Proto G (author)Catfaced82017-02-02

It's quite skookum!

author
joshuad131 (author)Proto G2017-02-08

Some would say Skookum as Frig

author
jimmytvf (author)Proto G2017-02-06

It chooches pretty good!

author
Nate_L (author)2017-02-05

Nice job wrangling those pixies, looks skookum as frig!

author
slapphappe (author)2017-02-03

Fascinating. I'm curious. Would this setup levitate fragments/crumbs/grains of aluminium -- albeit less efficiently -- or does one need a sheet of metal before it'll lift? And, if so, will the fragments clump together or lift off the ground like a cloud of particles?

author
Proto G (author)slapphappe2017-02-03

Thanks! The more surface area, the more lift you will generate. If you fragmented the foil, you would be breaking up the current loops induced into the foil that are responsible for generating the lift. If you had a much, much more powerful field, you could lift small pieces but they would just fly off the coil as if you just blew them away. You would need a barrier to contain them.

author
Ilovegold (author)2017-02-03

is that one of AvE's ruler things?

author
Proto G (author)Ilovegold2017-02-03

It sure is!

author
Droxz (author)2017-02-02

Nice one, voted for your instructable. Keep up the good work! :)

author
Proto G (author)Droxz2017-02-02

Thank you!

About This Instructable

16,908views

102favorites

License:

Bio: Electromechanical Engineer, Product Designer, Maker. I love to make prototypes and teach others in the process. I graduated from UCF and spent two years working ... More »
More by Proto G:Levitating Platform1000W Portable Induction HeaterHow to Make a Metal Key With a 3D Printer
Add instructable to: