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Grinding Concrete Deck Footings

The above-ground part of the deck footings, made in sonotube, were not shedding water very well. They were flat or a little concave at the top, so I ground them to a nice curve with a 4" angle grinder and a dry serrated diamond wheel. Does not take long at all, diamond eats up pretty much everything.

Original shape First big cut hogs off the edge Second cut blends the vertical Third cut blends the horizontal
Original Shape First Cut Second Cut Third Cut
Final ground shape Final shape after washing (still wet)
Finished Washed