Regarding the magnets grade, I tried to find some magnets available in area where I live (Romania), and I found a company that sell some ferrite magnets close to dimension given in the book....
I asked them about grade C8 and they told me about F30 type
.Can somebody enlighten me what kind of grade means this F30 type?
Thanks
I asked them about grade C8 and they told me about F30 type
![Confused](https://www.energyscienceforum.com/core/images/smilies/confused.png)
Thanks
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