Howto PCB - a quick guide

WARNING: I'll will take NO RESPONSIBILITY of the below described guide. If you don't know what you are dealing with do NOT use this guide!

In order to make PCB's I have made a small bill of materials and a step by step description.

Materials needed:

  • PCB with photo resist
  • Steel wool
  • Water and plenty of it
  • Hydrogen peroxide, see http://en.wikipedia.org/wiki/Hydrogen_peroxide
  • Hydrochloric acid or HCl
  • Spray, protective lacquer
  • Sodium hydroxide or NaOH, see http://en.wikipedia.org/wiki/Naoh
  • Protective eye wear and gloves

    Step by step in short:
  • Print the circuit on a piece of transparent plastic
  • Expose the photo resist on the PCB for approximately 3 minutes
  • Develop the exposed PCB, using 3 dl water and 5g NaOH (or less)
  • rinse with water
    WARNING: wear protective eye glasses and gloves. NOT TO BE TAKEN LIGHTLY
    Must be mixed in the right order
  • mix one part water with one part hydrogen peroxide and one part HCl.
    WARNING: wear protective eye glasses and gloves. NOT TO BE TAKEN LIGHTLY
  • Cauterize the PCB
  • Rinse with water
  • grind off the PCB using steel wool
  • Spray the finished PCB with protective lacquer

    If the PCB is okay, the components can now be mounted and soldered

    So far I have made 4 PCB's using the UV exposure and using the above method. The exposure time was set to 3 minutes and it worked just fine without any errors.