Years ago I bought a master plate to for table to blade alignment. Works really well eliminates any variance between blades. I thought I was really smart, until now... mdf is a great idea, wish I had thought of it and saved my $60.00.I'm checking my table saw blade alignment. Instead of doing the alignment with a saw blade I am thinking that a piece of 1/2" MDF might make a good alignment plate....should be dead flat. Your thoughts?