Stop in for a cup of coffee

WV64Signet said

Step drill bit for larger hole in sheet metal? My largest bit is 1/2" need a little bigger for throttle cable.

Maybe conical grinding stone

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Step drill is the way to go. You can get a cheapy at HF. They are good for maybe three holes! Blue tape the bit where you want to stop or it will pull itself in farther than you want. Lord have mercy where is Karl?