Dremmel along the lines of the cut out, sanding down the edges, epoxy to the edges and then sanding it down smooth again would be an interesting try. But then I have no experience with cutting or reparing carbon...
@FredyCro started
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Dremmel along the lines of the cut out, sanding down the edges, epoxy to the edges and then sanding it down smooth again would be an interesting try. But then I have no experience with cutting or reparing carbon...