Homebrew PCBs

Someone mentioned that he thought that the iron was a ferrite. Ferrites 
are ceramics, and as I understand it are insulators. My earlier comments 
about iron possibly upsetting the etching process was referring to 
metallic iron, which would not get along well with the etchant. I 
believe the ferrite would not present such an issue, but I am not sure.


On 10/30/2016 8:47 AM, Dave Daniel kc0wjn@... [Homebrew_PCBs] wrote:
>
> One could construct toner particles with iron to result in at least 
> two different particle types: one, where the iron was completely 
> coated with some sort of insulator (e.g., plastic) and so unable to 
> form electrical connections, and two, where the iron was not 
> completely covered and able to form electrical connections. There are 
> obviously a bunch of variations on the latter which would result in 
> various partially conductive configurations.
>
> I have no idea if any of these formulations actually exist.
>
> DaveD
>
> On 10/30/2016 9:40 AM, alienrelics@... [Homebrew_PCBs] wrote:
>>
>> Using electrostatics, you actually don't want conductivity through 
>> the material or it will all just equalize.
>>
>>
>> Think of the last time you've opened a box full of styrofoam packing 
>> peanuts.
>>
>> Steve Greenfield AE7HD
>
>
>
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