Tamenuri Deep Dive
Tamenuri is a translucent layered finish — typically a colored or black under-layer glimpsed through several coats of clear kijiro urushi — and it's the technique that gives Tamenuri Studio its name and its signature look on fountain pens. It's a genuinely advanced finish; Michal Kulka's own beginner guide frames it as the technique to work toward, not start with, and lays out the full sequence in detail:
- Base layers: 2–3 wiped ki-urushi coats at 85–90% humidity.
- Naka-nuri layers: 1–4 coats at 80% humidity.
- Optional pigmented naka-nuri base coat — this is what will show through the translucent layers above, so color choice here defines the finished look.
- Kijiro with pigment: 4–5 layers at 60–70% humidity, with extended curing time between them.
- Clear kijiro overlay: 1–3 ultra-thin layers at 60–65% humidity — this is what creates the translucent depth effect over the pigmented layers beneath.
- Uwazuri polishing sequence: 4–5 progressively-less-diluted kijōmi applications (see Chapter 17 for what uwazuri actually does).
- Final polish with migaki powder after a 48–72 hour cure.
(Tamenuri Studio, How to start with urushi?) Note the humidity is deliberately stepped down as the work progresses from base to final layers — high humidity for the bulk early coats, progressively drier and more controlled for the thin final layers where surface quality matters most.
A related decorative variant, nanako-nuri ("fish-roe pattern"), is a Tsugaru-region (Aomori) technique from roughly the 17th–18th century that Tamenuri Studio has documented on video — but the studio is explicit that it assumes prior competence in roiro, layered pigmented urushi, and controlled curing; it is not a beginner technique.
