Originally Posted by BCRider

I don't like using a screwdriver because I don't like doing stuff like that to my tools. But I use a length of 1/2 inch steel bar or a long drift pin punch all the time.

Caloso didn't say HOW he tapped it out. It's important that you tap one side of the cup and then move to the other and tap there. Keep going back and forth using GENTLE tappings of the hammer on the pin or bar to walk the cup out in steps so that the angle stays small and almost invisible. This whole process SHOULD take you about 20 to 30 times back and forth before it falls out into the waiting towel you have placed on a stool under the cup to avoid it rolling away to another dimension under the bench... Or just put a loose bit of string or other such thing through the head tube before you start so the cups stay in the loop of string or soft wire or whatever.