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Old 08-29-2017, 04:58 PM
 
50 posts, read 39,242 times
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I'm in the process of rebuilding my entire shower and have made it up to the point of the final mud bed. So far, it has a preslope, pan liner, and the top layer of mud all pitched to the drain. The pitch appears to be good for the most part except for a couple of high spots that need to be fixed before laying tile. It was a dry pack mix (4-1) but has hardened down after a day of letting it sit. Is there a hand tool of some kind which will "sand" down concrete?
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Old 08-29-2017, 06:21 PM
 
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Default Depends how much material you need to remove...

... I've seen tradespeople that install terrazzo and other "finish grade" poured concrete floors / counters use rasps, files, sandpaper, other abrasives to get a smooth surface. Of course you could also rent power grinders that will remove material much faster. The fanciest tools have super-hard minerals including diamond. Needless to say if you don't know what you're doing this could go horribly wrong...
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Old 08-29-2017, 06:29 PM
 
Location: Morrisville, NC
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Go to the masonry and concrete section of a home improvement store and they have grinding blocks made of carborundum that you can use to grind it down with. They're normally used to smooth and rub the surface of concrete walls and other structures. Will probably work best using a bit of water.

Marshalltown 6 in. x 3 in. 20-Grit Concrete Rub Brick-840-HD - The Home Depot
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Old 08-29-2017, 06:32 PM
 
Location: Phoenix AZ
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not really a hand tool, but small grinders with a diamond cup will take off concrete like you're describing- the big issue is dust, not just a nuisance, but damaging to your lungs. Harbor freight has an inexpensive grinder & masks available..
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Old 08-30-2017, 04:20 AM
 
50 posts, read 39,242 times
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Awesome, thanks guys. This is a small 3x5 shower and since it's only a few sections, I'll probably just try manually doing it first as long as the rub brick works. I watched a demo of it and the guy was using it to smooth a surface. Hopefully this is rigid enough to file down some of the flooring vs scraping it.
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