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Okay, I need some help. My wife and I are slowly redoing the backyard and I've hit a snag. We're pulling out a crappy chain link fence and replacing it (eventually) with a picket fence. The previous owners, however, tied this fence into the patio which I need to keep.
The steel posts (hollow 2 inch steel) were sunk through the patio and then about 18 inches down. I had initially planned to remove them completely but I have no idea how to go about that without breaking up the concrete slab, so I decided to cut them off flush and fill them. That's still giving me problems. I cut them as close to flush as possible with a sawzal and was able to lift a couple of them straight out with a prybar, but the other are stuck epoxied into 1/8 inch sleeves that extend maybe 1/4 above ground level, and they're going nowhere. I tried to slowly work my way through with a metal chisel, which I've used before to cut off old boost scrapers flush with concrete, but didn't seem to make much progress.
Does anyone know of anything that could help me cut these damn things off flush with the concrete they're sitting on?