I need to make a cutting die with the following dimensions:
Length at least 6"
Width of 1" +-0.005"
I will be cutting 120 mil plastics.
I planned on taking a piece of surface ground square stock larger than
1" square and drill a 1/4" hole in each corner to give me a 1/8"
radius. Then mill out the center of the stock to get my 1" inside
dimension.

My question is are most dies sharpened on the outside using a special
grinding wheel setup?
Or can I pivot my Bridgeport head to mill at an angle and thus
producing my cutting edge bevel on the outside?

Thanks
Steve