How to mix urushi with pigments?

Urushi is brown, amber, sometimes yellow. Black (kuro) is made by adding iron compounds. All other colours - by adding pigments (not dyes). When adding pigments mixing and filtering is your main job.

Urushi used: nakanuri
Pigments: dark red (artificial, based on titanium oxide), pure white titanium oxide, eggshell powder.
Tools: spatulas, metal, plastic and wooden.

About me.
BLOG: https://tamenuri.com/
INSTAGRAM:   / tamenuri_studio  

I'm Michal and I'm a fountain pen addict and I lacquer pens with urushi lacquer. On my channel, you fill wind tutorials, videos from my urushi workshop, presentation of techniques, tools and materials used in urushi craft. I am also showing pens lacquered by me and other artists. I review pens but mostly urushi and I focus on this aspect of pen, not usual build, nibs and writing performance.
I am self-taught in this craft, most I know I do I learned from my own experience, trial and error. A lot of them. But also from Japanese books, and videos on urushi.

I make bespoke urushi pens to order, too, so please contact me If you are interested. It can be an ebonite pen I provide (I cooperate with several hight quality pen-makers) or you pen, provide the clip is removable and trim is not too elaborate.