I suggest who ever it was that was interested request a copy from him.
The basic process is to bleach out a finished print in the copper
chloride-hydrogen peroxide -water solution for about 3 minutes, wash for 15
minutes, redevelope in weak or used dektol or sulfide toner, rinse and wipe
loose gelatin from the print, wash, let air dry so redeveloped silver can
oxidize.
Every paper works differently, each toner or dektol bath responds
differently, each image is different, so lots of notes help if you like a
certain effect.
The copper chloride must be dissolved in COOL or COLD water, as it generates
lots of heat as it goes into solution. Use 10 grams in 750ml water. SLOWLY
add 25 to 35ccs of 30 percent hydrogen peroxide (first challange - getting 30
percent peroxide! It is used by people who chrome plate plastic parts, but it
is very explosive if you aren't carefull). Then add water to make 1 liter.
The amount of peroxide is less for graded papers, more for variable contrast
papers.
Another option is cosmotoligist's hair bleach, which is 18 percent peroxide.
In that case, add 50 to 60ccs, then water to make 1 liter.
Any other questions, I suggest you ask Craig. All I know is that the effect
is very different from any other process. Almost looks like computer
enhanced work.
Don Upp