Would anyone be interested in an android app for calculating bevel angle? I'm making an app for me, in which I can input the spine thickness, blade width, spine offset (the distance from the outermost part of the spine and the part that actually contacts the hone), tape thickness, number of tape layers, and desired bevel angle. When it's done, it will give you your bevel angle, whether or not you are within one degree, and if not, what to do to fix it (ie, add how many layers of tape, or wear just the spine). Just gauging interest, and would be happy to provide the apk to anyone interested when it's done. Who knows, maybe the mods could chime in as to whether or not it could be an official B&B app after testing?