Indicate dimensions on your drawing.
Include critical dimensions & applicable tolerances.
Specify if dimensions are OD (outside dimension) or ID (inside dimension). If not explicit, the dimensions you draw in between flanges will be made ID, and dimensions outside of flanges will be made OD.
Indicate dimensions on all flanges, as well as pertinent overall dimensions desired on parts.
If hems are present, indicate if the hems should be closed hems or open hems.
Include bend angles on all bends that are not 90 degrees. It is best to use included angles whenever possible since that is what we input on the press brakes.