Stencil Etching

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  • open original eagle file
  • show only top (or bottom) layer
  • ripup all traces
  • now you can print to pdf, make sure scale is one, monochrome, and mirror
  • take pdf and convert to png, 600 dpi will work
  • in Preview (Mac)you can inverse colors by going tools->adjust color and switching black and white level arrows on top to the other side
  • Now you'll want to create a white background and cut and paste out just your stencil (this way you don't print a ton of wasted black)
  • now follow PCB_Etching
    • You'll want to seal with green
    • etch as little stencil as you have to as every bit of copper you etch is wasted etchant(cut away unneccessary)
    • but don't marker/cover over back of stencil. It needs to be able to etch through from the back as well
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