Things You'll Need
Instructions
Grind down the edges of the four prongs of a Phillip's head screwdriver with a rotary tool such as a Dremel rotary tool. Grind the edges so that they are more rounded than they currently are.
Grind down one of the four prongs of a Phillip's head screwdriver until that one prong has been completely removed from the tool. Note that you should attach the screwdriver to a workbench with a vice for safety.
Let the screwdriver cool down for about an hour as grinding will cause it to be hot. You'll have a usable tri-wing screwdriver to use on your Wii game console or whatever you need to use it on.