This video shows step applying kokuso, doing restoration and filling chips  using traditional, lacquer based kintsugi. Kokuso is a mixture of flour, water, lacquer and wood powder.  It is strong and easy to shape.  I am applying it to an already reconstructed ear and horn on this figure.  I can’t get the shape I need so am applying extra material so get it.
Also refer to this page, https://www.kintugi.com/?page_id=80
For more on traditional, lacquer based kintsugi see kintugi.com