Router & Concrete?

Is it possible to get a diamond bit for a standard router to round off the edges of hardened concrete and/or cut slots in it with rounded edges?
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Joe Agro wrote:

Never heard of such but steel is much harder than concrete. So is carbide but it would be too brittle to even try I would think.
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yes, but an easier way to round off edges is to use a diamond pad on an air-operated grinder. that's how they do edges on granite tabletops, for instance. if you want a profile different than a roundover, you can get diamond bits for routers, but you'd need an air router to use them. a slot can be cut with a diamond saw blade, but again, in a water feed device.
regards, charlie cave creek, az
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Sorry, but you have it backwards- components of concrete (sand and aggregate) are harder than any steel, and will quickly grind any steel bit away. Some stone-cutting tools might be appropriate, like from Trow & Holden in Barre, VT.
HTH, John
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A router wouldn't be the tool, but what you want is at least technically possible and is done. You see streets where they cut such grooves into the concrete for traction and to lower the level prior to resurfacing. That equipment is not available for home use though.
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tuckpoint grinders will work, also possibly a circular saw with a concrete blade
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wrote:

Sure, somewhat normal stone masonry item. But it's hell on normal routers. Might try an angle grinder with a diamond pad for better performance.
Jeff
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