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[PCB Prototype] Smooth surface finish on PCB for low pressure seal

I am hoping to do a low pressure O-ring seal on my PCB. I am wondering if there are any easy methods give me a smoother surface finish on my board?
  • answered Nov 30,2019
    by Babu
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1 PCBWay Team 8
2 Frederic 3
3 Engineer 1
4 Jegatheesan Soundrapandian 1