Homebrew PCBs

The green coating is a solder mask.  It comes in a variety of flavors silkscreen applied epoxy, photo imaged epoxy (CIBA IIRC), and photo imaged acrylic (DuPont Vacrel).  Stay away from the Vacrel if you're going to wave solder it - it solder balls like no tomorrow.  I have no idea how you would apply these materials without professional production equipment.
  ----- Original Message ----- 
  From: Bob Weiss 
  To: Homebrew_PCBs@yahoogroups.com 
  Sent: Monday, October 18, 2004 6:36 PM
  Subject: [Homebrew_PCBs] Green coating used on PCB's



  Does anyone know what they use on PCB's to give that green coating 
  that they then apply silkscreening to? Can this be purchased? IF so 
  where? What are the benefits to using this?





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