Hey guys, I've never used bl and was wondering if u keep on the sapwood or take it off? How thick should the sapwood be if it is on there? I also have never used ash and was wondering how good a bow it will make? Can either be heat bent or do they work with steam? How do they react to heat treatment? Dies ash have sapwood? Do u use it? Do u scrape off the bark and that's your back? Sorry only have used sage,yew,hickory,hackberry,and red oak.