Removing Damaged Brass Concrete Deck Anchors

[CarlD]

There's a reverse thread-cutter called an "Easy-Out" that may work. You drill a pilot hole in the item, then twist this thing in using a tap wrench to turn it. It cuts into the material turning counter-clockwise. But be careful: If you break the "Easy-Out" it's much harder to get out, being it's hardened steel. (Guess how I know...Hint: A motorcycle engine).

Another solution is what's called a heli-coil thread repair kit. This over-drills and taps the hole by a specified amount, then a hardened, specially shaped spring is inserted. The inside of the spring (the heli-coil) is the size of the original hole. However, as it's hardened steel, it probably won't stand up to water and will rust.

Of course, epoxy putty can be used to re-fill the hole and when it's hardened and cured, re-drill it to size--the should be as tough as the concrete, if not tougher.

[Stlgasman]

What did you wind up doing?

[Ohm_Boy]

FYI - there are left-hand twist drill bits made JUST for drilling out threaded fasteners. Everything is done the same as any conventional drilling for an extractor (Easy-Out), but since the drill is turning to the left, it helps back the broken fastener out, sometimes without needing the extractor.