That’s what I do. Or I’ll run a couple passes over the board with 220 and then 320 grit sandpaper in a random orbital sander. Then I finish with a mineral oil/beeswax mix.
The exception is where I’m going to spray it to darken all of the engrave to be consistent since bamboo can have really variable grain that shows a lot of variation in the engrave. Then I mask it, shoot it with a couple coats of Minwax Polyshades and then do the oil treatment after it dries.
I believe that was in the ballpark of 1000/100, but there was a lot of trial and error that went into that. I will do bamboo if I have to, but I’m not fond of it.