I never had any ill effects dumping electrolysis guck myself. And I've 
dumped a lot.
Never had any trouble with a stainless annode either.
  20 some odd years, and I am no more than "mostly dead". heh
   I use low amperage for heavens sake. Its not like I am cleaning 
pirate ship cannons in a swimming pool with arc welder power.  It dinky 
power, my setup.
    I have a tank I built just long enough for saws when needed. A 
wooden box lined with heavy "pond liner" plastic.

  I've also used several different kinds of acids and a gudzillion kinds 
of wire brushes and abrasives too.  Even blasted a bit. Tried most 
things at one time or other.

   But lately though, I tend to use scrapers a lot.
  Scrapers and razor blades. It takes some practice to cut what you 
want, and leave what you want to keep. But its just work, you'll get it 
if you try.

  Scrapers ain't just for wood you know.  I have personally scraped onyx 
and other stones that were soft enough to scrape.
   I have scraped a lot of cast iron. Steel, whatever.
     Same old scraper you use on curly maple cuts iron too, ya know.
  Not sure about the "hours long fussy edges" people put on their scrapers.
   But drawfile and go?
     Works fine for me
      yours Scott


-- 
*******************************
    Scott Grandstaff
    Box 409 Happy Camp, Ca  96039
    scottg@s...
    http://www.snowcrest.n
et/kitty/sgrandstaff/
    http://www.snowcr
est.net/kitty/hpages/index.html