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  1. 5

    pcb DRY DILM problem

    ii have big problem with dry film i buy from china negative dry film. i use soduim carbonate to developing dry film . after developing i see the copper good when i put pcb in ferric chloride to etching it. the some pcb area is not etching because there are an Transparent layer protect copper...
  2. 5

    pcb DRY DILM problem

    are there problem in dry film ?
  3. 5

    pcb DRY DILM problem

    Re: pcb DRY fILM problem this photo the pcb in the ferric chloride and the pcb copper not etching and copper still shiny
  4. 5

    pcb DRY DILM problem

    pcb DRY fILM problem i buy from china negative dry film. i use soduim carbonate to developing dry film . after developing i see the copper when i put pcb in ferric chloride to etching it. the pcb is not etching because there are an Transparent layer of dry dry film " i use a correct layer...
  5. 5

    i ask about plating ?

    what is different between copper plating and through hole plating .
  6. 5

    problem with solder mask printing ?

    i ask about if some one in this forum use silk screen method. and my post deleted why :-(
  7. 5

    problem with solder mask printing ?

    the solder mask layer and layout are 1:1 when i put pcb in silk sreen to print solder mask ! i can't aligned all pcb with silkscreen . alot of board solder mask print in wrong place on pcb i have error with matching silk screen with all pcb layout.
  8. 5

    problem with solder mask printing ?

    hiii, i use silk screen method for printing solder mask layer. but i have problem. how i can matching pcb layout with solder mask layer?
  9. 5

    silk screen printing help

    thank you very much. i use transparent paper what is best kind of laser printer to print on it. i use hp1005 laser jet but it printing quality on transparent paper very poor.
  10. 5

    silk screen printing help

    hiiiii :grin: can i print smd tqfp 144pin by silkscreen.
  11. 5

    PCB manufacturing by screen printing

    Re: how pcb printing thanks for reply i want to know are there a direct printer to print a pcb track .2 mm and sloder mask or the manufacture how print pcb like these
  12. 5

    PCB manufacturing by screen printing

    how pcb printing 1-how can i print track like this " i think silk screen" 2-what the method to print the solder resist mask "i think silk screen"

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