So here the question, What are my options for finishing my newly built guitar? What i have is a newly built bass, composed of Maple, Mahogany, and walnut. Neck through body, single cut. See the attached picture for more detail. I was told the other day that polyurethane could soften from the oil on your hands over some time. So i was wondering what other option i could do. I don't want to paint it, and i want to keep the wood grain. Im basically looking for some type of a clear coat or mostly clear coat but I'm open to all options. Also i was wondering what i need to put on the ebony fretboard. I was told that there was a some type of oil to use. Any input is appreciated. Thanks.