There is a difference in a good wood finish and a good wood bow finish. Finishes that are good for furniture, etc aren't necessarily good for bows. Bows spend a lot of time in the weather, rain, snow, heat, cold, etc. For wood bows we need a finish that will repel water but also slow down the hygroscopic rate, the rate that wood takes on atmospheric moisture(water vapor). Even a bow with a good finish will still have this hygroscopic intake and output of water vapor, not the water but the vapor.