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previous: Jim Radmer Thank you Mark, I tried making a SB... -- 3/5/2000 8:58 AM view thread

Re: It works! / Etchant

3/5/2000 10:48 AM
Stuart
Re: It works! / Etchant
For ferric chloride, try 40-50% weight/volume; for persulphate about 15-20%.  
 
I use a Dalo PC pen for drawing out circuits. The ink is extremely thick, so you only need one coat and it even stands up to ammoniacal etchant.