Homebrew PCBs

In a message dated 6/30/2005 8:07:35 A.M. Central Daylight Time,  
lcdpublishing@... writes:

With  regard to chemical etching of boards, what chemicals or materials 
are good  for resist?


Chris:  GOOD question!  The "resist pens" are  generally marginal, if they 
work at all.  There is a German  (Stätdler?  Sp?) RED pen that is supposed to be 
superior.   I  bought some "Industrial Sharpies" (U.S. make), but haven't had 
time to  try.  
 
FINGERNAIL POLISH (basically a fine lacquer) is excellent,  particularly for 
large areas that need to be "painted".  
 
Of course, the proprietary photo-sensitive sprays, or  pre-sensitized blanks 
are good, if DONE properly!  This takes some patience  to DO right!
 
Lotsa luck!        Jan  Rowland


[Non-text portions of this message have been removed]