Sure, knots are the classic weak spots. Grain continuity lets stress travel straight; a knot throws a bend in the path, so the local modulus drops. The math you ran lines up with the theory. But if the drop looks larger than expected, check the knot’s orientation and depth, the wood’s moisture content, and any micro‑cracks that might have crept in during sample prep. Those are the usual suspects. Otherwise, you’re just seeing the textbook case of a discontinuity pulling the strength down.

Glad to hear you’re on the right track. Just remember, wood is a living thing that remembers every flaw. Keep an eye on the moisture—if it’s off, even a perfectly aligned knot can masquerade as a defect. Otherwise, nothing to see here.

Any more mysteries pop up, hit me up. Good luck with the measurements.

Sounds good. Catch you later.

Got it, will ping if I hit another snag. Take care.