I don't know about selenium toner, but I have used non-hardening hypo fixer (Sodium Thiosulphate, not rapidfix) with a drop of hydrochloric acid to blacken copper pinholes. It gives a rich deep blue-black color. Don't try to leave it in after it turns black to make it thicker and darker because when it gets thicker and darker it doesn't stick to the base copper nearly as well. It happens pretty quick and muriatic acid from the hardware store (cheap hydrochloric) works fine.
scl On Fri, Apr 23, 2004 at 07:28:42PM -0400, Uptown Gallery wrote: > Hello: > > I want to know if selenium toner will blacken copper for blackening copper > pinholes, but I neither have my own darkroom nor have toner. > -- Stephen C. Lovely scl at qu.to _______________________________________________ Cameramakers mailing list [EMAIL PROTECTED] http://rosebud.opusis.com/mailman/listinfo/cameramakers
