This video isn’t about kintsugi but kasugai, staple repair. 鎹 修理,
I made staples from 3 types of metal.
The first is from the copper looking staples that hold cardboard box together. It looks like copper but is just a regular metal with copper color. It is too thick to make a good, flush fitting staple.
The second staple is made from pure copper from electrical line. I flattened it on an anvil. It is easy to bend and file to a point on the bent part which fits in the hole.
The third type of staple is made from a 1.5 mm diameter steel rod, regular steel, not stainless. It was the easiest to bend precisely to size and file points on.
The last photo is of one of the damaged staples which I took out to replace. It is flat, less than .5 mm thick.
The bowl
For more on this process and other steps for traditional, lacquer based kintsugi, see