Step 2 · Support the Cast Iron Pipe

This is the step most people slow down on. Take it one move at a time — there’s no rush, and you can rewind the clip as many times as you need.

Cast iron is brittle and incredibly heavy. Before cutting, you must prevent the pipe from sagging or falling. On each side of the section you intend to remove, install robust supports. You can use strong metal strapping (pipe hangers) secured to the ceiling joists above, or build temporary supports from 2x4 lumber wedged firmly between the floor and the pipe. Riser clamps that bolt around the pipe and can be fastened to a support structure are an excellent option. The supports should be as close to the cut lines as possible without interfering with your saw.