On 11/12/12 04:57, smilingcat90254 wrote:
> I've seen nurdRage. He does have good videos and this is no different.
>
> Interesting about HCl + H2O2 (yes it does "decay").
>
> And CuCl2 + HCl (stable). He says it can be regenerated but first line says
> that Chlorine is being used to create CuCl4 and use up HCl. I don't see how
> you can replenish Chlorine without adding more HCl. Well he said he will have
> another video just on CuCL2 + HCl etchant.
>
> He does have video on FeCl3 and tells you how to make it. Only thing I don't
> like is that FeCl3 stains everything. I guess the disposal of it is much
> easier. And I may go back to using FeCl3. Also easier to obtain or to make my
> own.
>
> I can concentrate H2O2, so I can make it fairly quickly without diluting it
> too much.
>
> Thanks!
I used to remove iron-based rust stains using a biodegradeable rust killer gel
that is discontinued. Another biodegradeable non-acidic rust killer should work
such as Evaporust (a chelating agent).