Rebar comes in very long rods (typically 8-20 foot and up to 40 foot in length). Due to it's length, tendency to be covered with mill scale or rust, and overall weight rebar is usually best handled in a large open area with few obstructions. Cutting rebar often creates very hot sparks so make sure the area is clear of flammable materials. The rust and sparks from rebar can ruin clothing so wear something sturdy and old.