See...I thought this was a silly question and from it comes some great information that others found helpful. I know I did. Ive scrounged around the shop an drilled several diameters of whatever metal I could find and my grommets are fitting better now
Im sure we all have little things we do to make things easier but dont post them because we feel either everybody knows or does it this way. Maybe a "shop tip's" thread is in order to show/share our jigs or tips?