Homemade tool demagnetizer

First you will need to secure the transformer somehow to the table you are going to use it on just temporary. Plug in the transformer, and get the tool you want to demagnetize to the transformer, because of the magnetic field the tool will be drag down to the core, and you will need to get it out of there pull it and test the newly demagnetized tool on some small nut to try if your demagnetization was successful, if it isn't do the same thing again. And you are DONE.

Question 3 years ago on Step 1. Answer 1 year ago. Your garammar is brutal and I am left to try and figure out what you are trying to say by looking at the pictures that you posted but the writing wow! And what is powering this device? Reply 12 years ago on Introduction. I don't leave anything to run more than minute with alligator clips. I actually like having screws stick to my screwdriver.

Take a powerful magnet and stroke your screwdriver about 20 times on it and voila! Quickly grabbed a PTC and tried it — works perfectly!

Initially about 25A current flows, which decays in. Only downside is that to degauss a second tool, you have to wait about a minute for the PTC to cool down. But it works very well. I certainly have a PTC resistor or three around here somewhere, although with completely unknown characteristics.

Now I know what to do with one when it bubbles to the surface… thanks for the tip! Not at all! You just need to arrange for an identical lightning strike at the opposite corner of the house! Should be a trivial bit of mad-science for someone like you! Given the carnage resulting from the first strike, that is just so unattractive… [grin]. BTW, this discussion reminded me of highschool after a demonstration of CRTs with an oscilloscope, deflecting the beam using a magnet.

Teacher grinned sheepishly as he said he had accidently left the magnet on the scope after the demonstration had finished. He had ducttaped it permanently on the scope, reversed polarity. Magnets — guaranteed to provide hours of fun and frustration magnetized calipers and other tools…. If I could get one of those kHz experimental licenses, that would be even better …. We wound a coil out of phone wire and a toilet paper holder The trick was in putting as much of a tin foil fuse in as the house fuse could stand without blowing Mom would scream when we blew a fuse!

We smiled and did it again! Rubbing a screwdriver over a heavy spkr magnet 20 oz. It,s called "degausing" George.