Homebrew PCBs

I just use an F15T8 bulb in a standard 18" strip light fixture.  Wood pieces on both ends make it 4.5" above the surface.  I put a bent piece of aluminum (like a cookie sheet) directly over the bulb as a reflector.  It actually hangs on the buld.   Exposure time is 13 minutes with Injectoral pre-sensitized boards.  

John

  ----- Original Message ----- 
  From: David McNab 
  To: Homebrew_PCBs@yahoogroups.com 
  Sent: Friday, February 23, 2007 5:31 PM
  Subject: [Homebrew_PCBs] cheap UV light sources?


  Hi,

  I'm looking to try out photo etching and am considering the options.

  Can someone please recommend a UV lighting source which:
  - is cheap
  - has consistent UV output
  - is readily available, or easily made up from items from general
  hardware stores
  - gives good results with low exposure time (preferably 5-10 mins,
  I'm not keen on 30 minutes)

  Also, is it hard to get good results using spray-on resist? Should I
  just cop the extra cost of pre-coated PCBs?

  Cheers
  David



   

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