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PCB etching instructions: Difference between revisions
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→Etch
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Check the colour of the liquid - if it's bright green you're good to go. Otherwise the solution may need aerating for a few minutes before use. | Check the colour of the liquid - if it's bright green you're good to go. Otherwise the solution may need aerating for a few minutes before use. | ||
Follow instructions on the notice, but the board is done when all the exposed copper is removed. The balance is removing too much copper and getting breaks in traces vs not enough and some small closely laid traces may have bridges. You are looking for clean edges to your traces - not wobbley "chewed" looking edges (which could indicate you etched for too long, not long enough, or that your exposure wasn't crisp enough) | Follow instructions on the notice, but the board is done when all the exposed copper is removed. The balance is removing too much copper and getting breaks in traces vs not enough and some small closely laid traces may have bridges. You are looking for clean edges to your traces - not wobbley "chewed" looking edges (which could indicate you etched for too long, not long enough, or that your exposure wasn't crisp enough). This can take anywhere between 10 and 30 minutes. | ||
After this stage you should rinse the board in water for at least 60 seconds (using the integrated spraying slots in the etching station) before touching it with your hands, transferring to the next tank to begin stripping the photo resist. | After this stage you should rinse the board in water for at least 60 seconds (using the integrated spraying slots in the etching station) before touching it with your hands, transferring to the next tank to begin stripping the photo resist. | ||
