I have a pie business and run into the problem with the bottom crusts not cooking the way they should-- I make way to many to pre- bake the bottoms. What I really need is a disposable pie tine with small holes in the bottom. This distributes the heat and bypasses the tin barrier. I cannot find a manual hand punch that will work-- I even tried to find the disposable tins on line with holes in the bottom. no luck-- i was drilling small holes in the bottoms and then having to smooth off the rough edges. Way to time consuming. Any suggestions other than patent my own ?