One of the materials you use in kintsugi is flour. It is used as an additive in a mixture called mugiurushi, mugi = flour, urushi = lacquer. Mugirushi is used as a “glue” to stick things back together. Regular, white wheat flour is what I use. In Japan there is a type called middle gluten which works best for me.
This is a tool used for sprinkling the metal on the lacquer. You load it up in the open end and the metal comes out the meshed end. The mesh stops any debris in the metal from coming out.
Kintsugi materials, metal holder
This is an oil that is mixed with either roiromigakiko or ishiko for final polishing of the metal. It is possible to use other oils but this one doesn’t really gum up or heat up as much as others.
Kintsugi materials, mixing oil
Charcoal is more of a makie material but can be used in kintsugi as a cleaning powder. You use it to clean the surface of the piece after you have mixed it with some water.
Kintsugi materials, charcoal
Brass is an easy to use metal. The brass I have is extremely fine grind, finer than gold keshifun. Since it is so fine it goes on nicely and usually lays flat.
Here is a video showing application of brass.