To make it unnecessary to separate a painted surface to supply the current of the primary-side earth by installing an electric welding depositing type tool to the end of an energized drawing main spindle and installing a sliding hammer to move on the outer periphery of a main spindle, and a secondary-side earth current supplying rod at the top side end of the hammer.

Between an energized drawing main spindle 1 and a sliding hammer Nol 7, an upper current insulating resin 8 and a lower current insulating resin 9 are provided. The energized drawing main spindle 1 is provided with two upper and lower hammer stoppers 3 and 4 to control the moving range of the sliding hammer Nol 7. The painted surface of a concave damage portion of the exterior iron plate is separated and a depositing tool 2 is pressed against the portion to be drawn. A secondary-side earth current supplying rod 10 is pressed against it and a power supply switch 55 is pushed. Large current flows and the depositing tool 2 is short-circuited to the iron plate surface and is deposited. The drawing correcting work is done by repeatedly moving the sliding hammer Nol 7 while controlling the intensity in accordance with the extent of the concave damage.