On Thu, 09 Aug 2007 13:03:54 -0700, Grant Erwin
wrote:


What I'm most interested in now is the use of lead sheet for the cathode. I
have tried this (as I've posted) and it works great, no current drop as I always
used to see with steel cathodes. The lead electrode turns red, so I suspect the
formation of red lead (lead tetraoxide) as opposed to lead carbonate as another
person has suggested. My only reason for thinking that is the color - lead
carbonate is white, and of course lead tetraoxide is red, and my electrode
turned red, not white. I don't believe that much lead is going into the bath,
and of course I wash my hands after handling it.

I wish I knew more chemistry sometimes.

Grant Erwin
Kirkland, Washington


'twas me Grant. In my case I was using washing soda solution (sodium
carbonate) as the electrolyte. The growth on the cathodes was white, which is
why I assumed lead carbonate. I assume that you are using a different
electrolyte... What?

I could live with lead tetroxide as a contaminant... Wash it, dry it, grind it
and use it when scraping, It would save me the cost of buying more of the
stuff :-)


Regards
Mark Rand
RTFM