"bebx2000" <
bebx2000@...> writes:
> I always thought the copper needed to be super clean, but now I just
> use Scotch-Brite to give the surface a little tooth and CitraSolv
> concentrate.
You need the copper to be super ∗oil free∗ - i.e. keep your grubby
fingerprints off it! You normally don't need to make the copper shiny
or remove the oxides (in a CuCl bath, the oxides etch faster than copper
anyway). Shiny is actually bad if you're using transparencies, where
mechanical grip on the copper is key to keeping the toner there.