sorry to be blunt mate,,,,,
at least your father takes an interest and trys to help you,so why not cut the poor guy some slack
re your fingers
if you cut your fingers off then that's on you,NOT your poor father
you might understand when you go on to become a father yourself one day
cheers shaun
P.S.you should try having a father who's only interest in his teenage son was.....punching his teeth out and breaking ribs throughout his (my) teenage years