Yeah, I make a grain map before the first cut. A quick scan with a ruler and a pen marks out the principal grain direction, and I overlay that onto the beam’s intended load path. It saves me from surprises later, like a split where the joist should be solid, and lets me plan the cut so the fibers run in line with the stress. It’s a habit I pick up from the old timber framers you mentioned, and honestly, it makes all the difference when you’re trying to keep a beam from warping or snapping.

I always get a quick reading with a meter before I finalize the map. A tiny wet edge can cause the grain to bend or the board to shrink unevenly, so I’ll cross‑check the whole piece—especially the corners where the cut will start. If the moisture is off, I’ll re‑scan or even cut a smaller test strip to see how it behaves. It’s a bit of extra work, but you save yourself a lot of warping headaches later.

Yeah, I’d imagine a bunch of test strips jiggling like a tiny wood band. But I usually just read the grain and the moisture, not play a symphony. Still, if I ever hit a resonant board, I might just play it on the bench while I measure. Just another detail to keep the beam from acting like a wild animal.