Homebrew PCBs

Hello All
Adam reading your PDF for Carbon Black hole - On page 1 Step 12 says
Microetch in non chloride etching solution. Timing is not written there. ?
Can you please tell for how much time to Micretch?
 
I rquested you to provide some photos of the results if possible.
Whats the latest / improvement to the results. 
I am doing research on FLEXOBRITE BLACK 258/86 and Dye D&C Green No. 5, C.I 61570 Any one have more detailed info on these two. [ACTIVE COMPONENTS IN THEM]
or any replacement for both of above
 
Regards
Athar Kaludi
ceo_premium [at Yahoo]
PAKISTAN


      

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