Spot weld drill bits go blunt and get replaced. These are not a cheap consumable, they are a tool that can be restored.
The Roken drill sharpener reforms the point and sharpens the cutting blades. Even a broken bit can be replaced. A drill bit can be re-sharpened up to 20 times. Whatever you pay for spot weld drill bits, that's a lot of money saved.
Small example on how the spot welds from the old rocker panel on the two door Impreza lines up with the new rocker panels from the four-door Impreza they pretty much line up everywhere other than where the pinch welds are smashed but close enough. #subaruimprezacoupe#subaru#spotweld#autobodyrepair#closeenough
Top Tip of the day. Use the correct drill bit when removing the spot welds.