A:There are numerous tools that will work such as a side grinder fitted with a cutoff wheel or a demolition saw, however in many cases the pipe will be too close to a wall or other obstruction to permit the required range of motion for the tool.Using an angle grinder you can cut a 4" piece of cast in 1 minute 30 seconds. Sawzall - five minutes - lots of vibration. Try the Bare-Tool Makita Cut-Off/Angle Grinder.
