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video Magnetizer / demagnetizer
Surely magnetized tools have helped you many times, the best example is definitely a screwdriver. When you drop the screw in inaccessible location you can easily pick it up with magnetized tip of screwdriver. Even if not magnetized, it is very easily done just by touching the strong permanent magnet. And what to do when this feature bothers you, when you work in a small space, and small bolts and nuts keep sticking to the screwdriver tip? Continue reading and find out how to make simple device that will help you solve both problems.
Complete construction procedure of device mentioned above, and on video is available on my site
Complete construction procedure of device mentioned above, and on video is available on my site
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84
Jun 15, 2011. 5:39 PM
rimar2000
says:
rimar2000
says:
This device is very useful!
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3
Jun 16, 2011. 2:07 PMdamirvk (author)
says:
tnx
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210
Jun 16, 2011. 6:52 AMPhil B
says:
Phil B
says:
I once used the core of a much larger old electric motor to erase cassette tapes. I had to be very careful to turn it "off" after just a couple of seconds, or it would draw too much current and overheat. What I really like about your design is the addition of the diode and the double throw switch so the device can be used to magnetize something, too. I have sometimes seen people wind insulated wire around a tool they wanted to magnetize and touch it briefly to the posts on an automobile battery. Again, the wires become quite warm after only a few seconds.
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3
Jun 16, 2011. 2:06 PMdamirvk (author)
says:
Yes you are right about heating, especially in magnetizer mode when DC current is flowing through coil. That is the reason why I use small power coil. After 3-5min it gets warm and that is more than enough for normal use in workshop.
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