Homebrew PCBs

Richard,

Can you give a little more detail about the heat lamp that you use, such as brand, wattage, and identifier number on it?

Thanks.

John

  ----- Original Message ----- 
  From: Richard 
  To: Homebrew_PCBs@yahoogroups.com 
  Sent: Sunday, March 04, 2007 9:40 AM
  Subject: Re: [Homebrew_PCBs] sensitized boards


  I use Infared Light to expose my positive sensitized boards because I can expose them in about 90 seconds using a IR heat lamp.

  Richard

  ----- Original Message ----- 
  From: docstein99 
  To: Homebrew_PCBs@yahoogroups.com 
  Sent: Thursday, March 01, 2007 11:28 AM
  Subject: [Homebrew_PCBs] sensitized boards

  I was wondering if anyone can give me some advice, looking at the 
  threads recently it looks like lots of people here have tried 
  sensitized boards.

  This material appears to be the same stuff as silkscreen printers use 
  on silkscreens, where the exposed areas to intense light are hardened 
  and the unexposed areas are washed away with water.

  Do any of the sensitized boards or materials react to INFRA-RED light? 
  I have an infra-red laser diode on a cnc machine, its not powerful 
  enough to cut stuff with but will smolder black foams. I was wondering 
  if its possible to use that to rastorize the image, but I dont know 
  about all the different types of sensitizer or what types of lights 
  they react to. I know in screen printing, they make types which react 
  to a 4k watt metal halide bulb, and newbie stuff that works with a 150 
  watt lightbulb.

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