In 2005, his team reported that adding 5% amino and epoxy silane to Japanese lacquer sap enabled it to dry at a wider range of temperatures — between 20- 25°C and a relative humidity of roughly ...

It's a very labour-intensive and a very tedious process, because there's the extraction of the sap of the lacquer tree, followed by all sorts of procedures, mixing with all sorts of pigments ...

To get the sap, we'll have to start at 4 a.m. Making ... Narrator: After harvesting, the lacquer must be removed of any impurities and mixed for several hours before it's suitable for painting.