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Is there a drill bit that drills through grinding, instead of cutting? (lemmy.today)
submitted 1 month ago by to c/tools@lemmy.world
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Is there a drill bit made of the material of grinding wheel of orbital grinder, which breaks down slowly as it drills, or maybe it can be made of like diamond -studded metal file, so that the drill grinds as it drills, instead of cutting through the metal? Thank you for your interest.

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[–] [S] 1 point 1 month ago (3 children)

cutting drill bit requires a slower revolving drill, so it doesn't roll on the surface, and also requires pressing harder. This can be slower and less efficient, than if the drill bit straightly grinds into the material.

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  • [–] 6 points 1 month ago

    Roll? As in moves before it bites into the material? Sounds like you need a center punch.

    As far as efficiency goes, I don't see how grinding off the material is more efficient than cutting it, which is what normal drill bits do. Or maybe slice? Shave?

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  • [–] 4 points 1 month ago

    I think the reason you can't find any such drill, is because it's just less efficient than cutting the material, and possibly have a much worse lifespan due to clogging of the drill and overheating.

    Grinding things will clog up the drill if the dust can't be pushed out of the hole. You're going to have a very hard time pushing the material/dust away with an abrasive tip, due to the nature of abrasives.

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  • [–] 2 points 1 month ago

    That's still a little vague. What are you actually trying to accomplish? What material, what size and orientation (perpendicular or angled) of hole, and what is the hole for?

    I'm looking for an answer like "I'm pre-drilling before toe-screwing 3/4" oak for the frame of a cabinet" or "I'm drilling out plug welds in 16 gauge sheet steel"

    For all we know, you're having an X/Y problem and the best advice might be to use a drill press or even some other tool entirely.

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