I’m getting minor tear-out cross-grain when flushing edge-banding on quarter-sawn white oak; my trim router with a spiral downcut bit at 18k RPM still nibbles the medullary rays. Do you take a light climb pass or switch to a shear-angle block plane after scoring, and would bumping to a 1/8" offset with a bearing-guided bit help?
I stopped chewing the ‘medullary rays’ by shimming the bearing with one layer of blue tape so the bit leaves a hair proud, then finishing with a few skewed passes from a sharp card scraper — cleaner than a climb pass for me on QSWO; do you have a scraper handy?
Swap the downcut for a small compression flush‑trim with top/bottom bearings, flip the panel, and let the opposing shear keep those rays intact; 18k on a downcut just polishes and lifts fibers. I run 12–14k and take two whisper passes, then a tiny climb kiss only on the cross‑grain. @jgreenwood77, have you tried the Whiteside SC57 (or similar) on QS white oak?