Single Point Incremental Forming Single Point Incremental Forming is a sheet metal forming technique where a sheet is formed into the final workpiece by a series of small incremental deformations. However, studies have shown that it can be applied to polymer and composite sheets too. Generally, the sheet is formed by a round-tipped tool, typically 5 to 20mm in diameter. The tool, which can be attached to a CNC machine, a robot arm, or similar, indents into the sheet by about 1 mm and follows a c