If you are handy with a router, or know someone who is, there is a bit designed to ease off those sharp edges. You may still need the lowly file, but the results should be very good. Any cabinet shop should be able to help you out. Just tell them what you are trying to do.
Region 3 , 1st VP
Go often to the house of a friend, for weeds choke the unused path........Emerson
Never pick a fight with an old man. If he is too old to fight he will just kill you........a wise old man.