Today I sanded the whole bass up to grid 320, by hand. The result was really smooth, especially on the hard maple neck! Then I moistened the body to open up the grain. This brings out the figure and makes it easier for the oil to get into the wood.
After that, I started rubbing on some Rustin’s Danish Oil on the neck and body. I was surprised by the ease of use and even more by the result! It needs to dry for at least 6 hours and I need to apply 3 layers at least, so the it will take another week before the final result, but I’m already very happy with it.