And never sand cross grain. Sand by hand the same direction of the wood grain.
Btw…. Use very light coats of lacquer on paduke… I’ve seen a heavy coats make That paduke bleed.
even if I carefully try to sand with a fresh sdaning paper along the laminate direction the darker stuff spreads someinto the white lamination- its better but cannot completly avoid it. Never used paduke, but my reddish serviceberry makes a hell of a mess too every time I use it... good luck not all woods are that annoying.
Try lightly scraping it with a cabinet scraper. That should remove the discoloration without affecting the bow itself.
excatly my strategie until now. softly scrape the discolored section clean - then only polish with steel wool. maybe not the perfect finish but clean. Thanks PatB!
once again it seems there ist not "the easy trick" for everything - some things obviously need a little cheating and nerves