Magnetite Cores

[Aaron]

magnetite

Damian,

Yes, magnets as cores...
http://www.energeticforum.com/renewa...magnetism.html

This was magnet as core, not magnetite, I misread that on the first post.

I got cans of metal shavings from Bedini's shop a long time ago and used
that as a core filled with epoxy. Worked perfect. It was for a high frequency
coil used for healing purposes. Not magnetite, but had quick off/on.

[Sephiroth]

Like Aaron, I have mostly used iron filings or atomized iron mixed with epoxy for my cores and they have worked well for me Though I heard magnetite has lower hysteresis loss.

[Ted Ewert]

Not all black sand is magnetic. Some is other minerals like lava. A magnet is the only way to really tell.
Here are some pictures of the device I made to collect magnetite:

These are the component parts- a piece of PVC pipe, a rubber ring and a magnet on a stick.


Heres some that has been collected




In order to release the magnetite, the stick is pulled back up the tube and the rubber ring prevents the magnetite from following. It then falls off, hopefully into your collection bucket.

Cheers,

Ted

[dmonarch]

Wow

Thanks inquorote for the offer, I'll see how things go this end first with my mate.
Wow ted aint that beutiful. I love how the sand flocks together its gorgous

Damo

[Radiant_Science]

@All

I have found the Hematite/Crystal ore in Oregon/Washington up where I live.
Basically you are looking for Mountain Ranges created by tectonic "upheaval".

This process shoots molten Iron and quartz mixtures up in hexagonal columns. These columns weather and the ore appears on the banks of creeks and streams. I found a "peppered" white/grey rock that is strongly attracted to a magnet. (appears to be crystal, I assume quarts, with many ferrous "inclusions") The key here, it doesn't just get attracted to the magnet, it orients itself within the magnetic field.

Each "pepper of magnetite" is actually a dipole magnet, being as so...milling and casting of it with epoxy should be done in a mold that incorporates strong magnets to orientate all the dipoles. This way you will have a coherent magnetic event (instead of random orientation).

**In my observations, magnetite (at least what I found) doesn't seem to attract steel/iron very much, but, it is very responsive to external magnetic fields, almost as if it becomes a magnet in the presence of a stronger magnet.**

[Ted Ewert]

Each "pepper of magnetite" is actually a dipole magnet, being as so...milling and casting of it with epoxy should be done in a mold that incorporates strong magnets to orientate all the dipoles. This way you will have a coherent magnetic event (instead of random orientation).

**In my observations, magnetite (at least what I found) doesn't seem to attract steel/iron very much, but, it is very responsive to external magnetic fields, almost as if it becomes a magnet in the presence of a stronger magnet.**

All magnetite (Fe3O4) is ferromagnetic, but not all of it is magnetic. Some magnetite is naturally magnetized during its formation and is referred to as Lodestone.
All ferromagnetic materials become magnetized in the presence of a magnetic field. This is because their magnetic domains align with the external field. They do, indeed, become magnets. Some material remains magnetized even when the external field is removed (the steel in all my screwdrivers for example). "Soft" steel and cast iron do not retain a field.
The "black sand" I collect on the beach is all just ferromagnetic and does not remain magnetized either. This is one of the reasons it makes a good core material. I don't think you would want a magnetic core anyway.

Ted

[Radiant_Science]

I don't think you would want a magnetic core anyway.

Actually....try it...you may be pleasantly surprised.

Wind a coil so that it's field opposes the permanent magnetic field. You may notice as I did...much higher voltage collapsing spikes.

**I didn't use a whole magnet, instead I attached 110lb neo magnets to my soft iron core, saturating it and essentially having a large magnet.**

**Also, check Bearden's magnetic "bucking"**

[Aaron]

Leon Dragone

Actually....try it...you may be pleasantly surprised.

Wind a coil so that it's field opposes the permanent magnetic field. You may notice as I did...much higher voltage collapsing spikes.

**I didn't use a whole magnet, instead I attached 110lb neo magnets to my soft iron core, saturating it and essentially having a large magnet.**

**Also, check Bearden's magnetic "bucking"**

If you do want to look into an actual magnet for a core, definitely look at this:
http://www.energeticforum.com/renewa...magnetism.html

He had the real thing- cold electricity and the "currents" appear to be related to what Gray had but achieved in a different way.

[Ted Ewert]

Actually....try it...you may be pleasantly surprised.

Wind a coil so that it's field opposes the permanent magnetic field. You may notice as I did...much higher voltage collapsing spikes.

**I didn't use a whole magnet, instead I attached 110lb neo magnets to my soft iron core, saturating it and essentially having a large magnet.**

**Also, check Bearden's magnetic "bucking"**

I've been working on devices with magnetic cores for quite some time now. I thoroughly explored the MEG and am now in the process of building a motor based on switched PM current.
I still don't use magnets in my cores because I've never found it to be advantageous, or to increase my coil's energy output.
Using a coil to block the path of magnetic current is a whole different story.

Ted

[Joen2010]

All magnetite (Fe3O4) is ferromagnetic, but not all of it is magnetic. Some magnetite is naturally magnetized during its formation and is referred to as Lodestone.
All ferromagnetic materials become magnetized in the presence of a magnetic field. This is because their magnetic domains align with the external field. They do, indeed, become magnets. Some material remains magnetized even when the external field is removed (the steel in all my screwdrivers for example). "Soft" steel and cast iron do not retain a field.
The "black sand" I collect on the beach is all just ferromagnetic and does not remain magnetized either. This is one of the reasons it makes a good core material. I don't think you would want a magnetic core anyway.

Ted

Hello, I am new at this and I am just starting to work with my new ssg. I am using a roller skate wheel and bearing with 3 magnets and strapping tape. I was having a hard time finding sutable welding rod and couldn't find any magnetite so I went to a break shop and asked for the grindings form their break drum grinder. It seems to work fine and it is not permenently magnetic. Has anyone else tried this?

Joen2010

[radiant1]

begining research

A friend and I are just starting black sand core research for bedini cores, torroid cores, joule thief circuits, motors, and generators. We have obtained for free the equipment to create a super high magnetic feild to alingn the particles while the resin is curing. We live in the N. Idaho area where mining and black sand is very prevelant. We should be able to get it for free from the local mining club.
Alan