Homebrew PCBs

Do you use a positive acting resist? 

(I'm also correcting the subject line cause nobody got my joke before)
JT  

  ----- Original Message ----- 
  From: Adam Seychell 
  To: Homebrew_PCBs@yahoogroups.com 
  Sent: Friday, July 30, 2004 7:38 PM
  Subject: Re: [Homebrew_PCBs] Injet printers, transparencies and UV light...


  The black ink in my old Epson 660 is extremely UV blocking. I can expose 
  a PCB over 5 times normal and still not manage to effect the dark areas. 
  The problem of exposing his length of time is that thin traces become a 
  too narrow. 

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