We recently had a deck built from cambara. The deck boards are flat sawn and so they are nice and smooth. Some of the boards on the top of the railings seem to be quarter sawn and I am seeing "flake" - i.e., the grain rings are raising up making a rough surface if you rub your hand the wrong way (into the grain). Can I sand those down? Will the grain just raise again if I do so? Maybe I should use a scraper after sanding to really flatten the grain though maybe with it being outside in water, it will just pop up again. Any advice from this group will be appreciated as usual.
TIA.
Dick Snyder