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Black annealing on 100w MOPA

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Laser
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2023-03-14

Hi guys. I really need some help. I have a 100w MOPA and I urgently need some settings and focus for black annealing, I have wasted hours and got nowhere. 160mm lens.
C

    • Marshall

      2023-03-15
      I’m de-focused about 3mm, but I have an F420 lens (300x300)… don’t know if that’s a lot or not… I’m thinking it goes out where it won’t make noise at about 5mm… I’ve raised the head above it’s focal point.
This is a bit different…
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      • Marshall

        : These are cheap knives from dollar store… left is 2 passes, right is single pass.

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