I am working for an aircraft company that uses “old school” undimensioned drawings to define brake formed sheet metal parts (the same way things have been done for many decades). These undimensioned drawings go by different names at different companies: PCM, EMD, Mylar, Undimensioned Master...
I am designing several new brake formed parts that are defined on undimensioned drawings with a +/- .030” general tolerance. I am not sure if the interpretation of this general tolerance is the same across the aircraft industry (seems like it should be). I need to know the correct...
