How to repair big chipped area or lost pieces（Silver maru powder polish finishing）
Process Make a big chipped area, apply lacquer, sprinkle metal powder
- Day1 : Apply a coat of basic lacquer as foundation, apply kokuso
- Day2 : Shape kokuso, apply sabi
- Day3 : Polish Sabi, apply a coat of basic lacquer
- Day4 : apply tame-urushi
- Day5 : Polish with water and sandpaper, apply bengara-urushi (red lacquer)
- Day6 : Polish with water and sand paper, apply tame-uruhi, sprinkle metal powder
- Day7 : Apply 1st coat of basic lacquer
- Day8 : Apply 2nd coat of basic lacquer
- Day9 : Polish, Finish
- Use masking tape to cover any area that might get dirty during the process.
- Cut a piece of #400 sandpaper into a square around 1cm in size, fold it in 3 and polish the chipped area. Apply a layer of basic lacquer to the chipped area with a brush and gently press with a piece of tissue paper to remove extra lacquer.
- Make Kokuso。
- Apply kokuso to big chipped area or lost pieces area with a toothpick or a spatula. The thickness of kokuso to be applied each time is aprox. 2-4mm. If the chipped area is larger than that, repeat the process after it is dried for a few times.
- Set the piece aside to dry in a urushi-buro for around 1 to 2 months.
- When the kokuso is well dried, arrange the approximate shape with a cutter or a carving knife.
- Make sabi。
- Apply sabi with a toothpick or spatula to arrange the shape.
- After letting the sabi dry for over 24 hours, remove the extra sabi with a cutter or a carving knife.
- Once you arranged the shape with a cutter, sand down the sabi with #800 sandpaper and water until the surface is smooth. 。
- When the shape is neatly arranged, apply a layer of basic lacquer to the sabi with a brush and gently press with a piece of tissue paper to remove extra lacquer.
- When the basic lacquer is dry, gently polish the surface with water and #800 sand paper.
- Make tame-urushi.
- Apply tame-urushi with a brush and let dry in a urushi-buro.
- When the tame-urushi is dried, polish the surface with water and #1500 sand paper.
- Make bengara-urushi
- Avoid discovering the sabi under the lacquer while polishing. Apply bengara-urushi with a brush and let dry in a urushi-buro.
- When the bengara-urushi is dried, polish the lacquer surface with water and #1500 sand paper.
- After nicely polished, let’s get ready to sprinkle silver maru powder. Apply tame-urushi uniformly in a very thin layer. After applying the thin layer of lacquer, let it sit for 5-30min, when the surface of the lacquer begins to dry, sprinkle the silver marui powder with the sprinkle brush (ashirai-kebo).
- When it is well dried in the urushi-buro, clean the extra silver maru powder with a brush.
- Apply a coat of basic lacquer over the maru powder so that the powder may absorb the lacquer, gently press with a piece of tissue paper to remove extra lacquer. Repeatedly press with clean tissue paper until no marks of lacquer remain on the tissue. This process is called “Fun-katame”.
- Let dry in a urushi-buro.
- When the lacquer is dried, repeat the fun-katame process.
- Let dry in a urushi-buro for at least 10 days.
- Make”abura tonoko(mixture of tonoko and oil)“
- Apply abura tonoko on a piece of cotton and polish the area sprinkled with maru powder.
- Apply ishiko (polishing stone powder) on your finger and rub the area.
- Polish with a polishing spatula. Finish.
＊Left over abura tonoko can be kept in food wrap.