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I was installing some new blinds and when I drilled into the framing above the window my drill bit had a darker color wood dust on it. Other places I have drilled at the dust is the standard wood color but this was darker and sticky. Any idea why?

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    What year is the home? What region are you in? About when were the windows installed? The opening may be refurbished, with rotted sills or stoops replaced with newer lumber . Wood darkens with age, but isn't necessarily rotten.
    – AdamO
    Aug 3, 2023 at 16:23
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    What is "standard wood color"? Have you looked at a pine board lately? :P
    – isherwood
    Aug 3, 2023 at 16:38
  • You hit a knot.
    – Huesmann
    Aug 4, 2023 at 13:04

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Since you mentioned it was sticky, You probably drilled through a knot in the wood or hit a wood sap pocket. If the screws go in tight, you shouldn't have a problem.

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    Darker wood could simply be from hitting a knot in the board.
    – FreeMan
    Aug 3, 2023 at 19:59

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