This video isn’t about kintsugi but kasugai, staple repair. 鎹 修理,
The video shows fitting pure copper staples to the body of the bowl. I am using regular hand held burner to heat them, the staples are held on kiln bricks which are fireproof. The third staple fitting fails and that is the end of the video. I straightened out the points of that staple and then refitted it.
For more on this process and other steps for traditional, lacquer based kintsugi, see