For those of you who are familiar with my design that uses the
"C" Core having a "N" & "S" pole in a single coil should be able to see
why I like these cheap cores for mere basic testing. This may or may not
turn out to be the ultimate material but using a tile saw I can cut one
in half and get this show on the road.
$15 for this one. 4" OD
Yesterday I picked up 4 gallons of epoxy resin and with an electromagnet
jig/mold I could hit the iron dust as it dries? Problem is not the same
each time. i'll use my epoxy other ways. I am saving my HT epoxy for
other things, this is general purpose.
https://www.amazon.com/dp/B014S8G7PG/ref=asc_df_B014S8G7PG5128926/?tag=hyprod-20&creative=395033&creativeASIN=B014S8G7PG&linkCod e=df0&hvadid=196295924527&hvpos=1o4&hvnetw=g&hvran d=1070812461281091294&hvpone=&hvptwo=&hvqmt=&hvdev =c&hvdvcmdl=&hvlocint=&hvlocphy=9024376&hvtargid=p la-314241900419
![](https://encrypted-tbn0.gstatic.com/shopping?q=tbn:ANd9GcRrlNLebkqdiMbHlYIExZqmJ60lUZ1-d7Bl15KWrMUpZVyRfudyWgUzqlkUVo1CigedZP_KU98&usqp=CAE)
"C" Core having a "N" & "S" pole in a single coil should be able to see
why I like these cheap cores for mere basic testing. This may or may not
turn out to be the ultimate material but using a tile saw I can cut one
in half and get this show on the road.
![Big Grin](http://www.energeticforum.com/core/images/smilies/biggrin.png)
Yesterday I picked up 4 gallons of epoxy resin and with an electromagnet
jig/mold I could hit the iron dust as it dries? Problem is not the same
each time. i'll use my epoxy other ways. I am saving my HT epoxy for
other things, this is general purpose.
https://www.amazon.com/dp/B014S8G7PG/ref=asc_df_B014S8G7PG5128926/?tag=hyprod-20&creative=395033&creativeASIN=B014S8G7PG&linkCod e=df0&hvadid=196295924527&hvpos=1o4&hvnetw=g&hvran d=1070812461281091294&hvpone=&hvptwo=&hvqmt=&hvdev =c&hvdvcmdl=&hvlocint=&hvlocphy=9024376&hvtargid=p la-314241900419
![](http://flyer.thenetteam.net/3batterygen/toroid1.jpg)
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