sentence: The credits of the clip is shown. sentence:  A person mends steel with a welding equipment. sentence:  A person uses a hammer and a flat equipment to remove debris. sentence:   A person uses a flat equipment to remove melted steel debris. sentence:  The person places two dumbbell shaped steel in opening that he is welding. sentence:  A person uses a flat equipment to clean the welded opening. sentence:  A person uses a flat equipment to move the dumbbell shaped steels and then removes them with his hand. sentence:  The credits of the video is shown.