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Tuesday
May312011

Magnetic Clamp

A few companies sell a magnetic clamp for creating strong magnetic fields. Although the clamps are sturdy and versitile, they are expensive. Often very expensive. I decided to make my own.

I used a Jorgensen wood clamp. The clamps are very strong, and the threaded screw rods allow for very precise adjustment. The magnets are from K&J Magnetics and are 1" x 2" x 0.5" N42 rare earth magnet with (and this is the good thing) counter sunk screws holes. Excellent. Mine took a #10 screw and I used non-magnetic stainless steel, though magnetic steel would have probably been okay. (They are out of stock on this particular magnet, but they expect more and others would work.) 

The key is to drill holes in the wooden handle first, then drive in the screws. 

The idea was to make a pendulum that would show eddy currents. The bar is made of aluminum an 1/8 inch thick and the plates are made from 6 x 12 x 1/8 inch aluminum as well. I cut the slots on a miter saw but I don't recommend that as it was very dangerous, although it works with a carbide blade. I tried a bunch of ways of attaching the plate to the blade, but opted for the clamp which can be changed out the quickest. All the metal was obtained from Online Metals. They cut to order and for cheap.

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    Hands On Science - Journal - Magnetic Clamp
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    Hands On Science - Journal - Magnetic Clamp
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    The magnetic base can therefore be attached in a kind of appointments to some attractive surface, allowing the mean to be positioned in the superlative orientation for the piece to be tested. Combine this accompanying the spring of move allowed by the wings provides the agent a monstrous farm of alternatives ...
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    The idea almost came to life, would have made a great lighthouse! But all this needs a bit of tweaking and the work will be ready!
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    The vertical post, side arm and the dial pointer are associated by two swiveling connectors. These connectors permit free development of the arms so that the marker might be introduced to the work in a suitable introduction. The attractive base may have a V cut into the lowest part of the ...
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    Hands On Science - Journal - Magnetic Clamp
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    Magnetism is a class of physical phenomenon that includes forces exerted by magnets on other magnets. It has its origin in electric currents and the fundamental magnetic moments of elementary particles. These give rise to a magnetic field that acts on other currents and moments.
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    Hands On Science - Journal - Magnetic Clamp
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Reader Comments (2)

Nice tutorial you have in here. Thanks.

November 10, 2011 | Unregistered CommenterMelly Lifshitz

Magnetic clamp is a very helpful tool to make our work easier. And I think as of now there are lots of company and fields who are using it.

February 11, 2012 | Unregistered Commenterplumbing

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