Some hardwoods have so much natural oil in them that they will not absorb BLO or any other kind of oil. Cocobolo and rosewood are two that won't take any oil. You may get a very thin coat on the surface which will need to be replaced frequently on something that gets a lot of handling. People who work a lot with Pau ferro (ironwood) have taught me that the only thing you can use to finish or darken it is brown Kiwi shoe polish. It really works very well but needs regular reapplication. On something like checkered wood you would need to use a toothbrush to get it on and buff it off.