Hon-Swita Tomo Nagura #SN02820DS

Classification

Strata / Layer: Hon-Suita (本巣板)
Type: Tomo Nagura (rubbing/slurry stone)
Markings: Clear black ink kanji stamp reading 本巣板 (Hon-Suita)
Characteristics: Renge (蓮華) visible via subtle reddish-pink blossoming on the cream matrix, alongside natural crust/skin (kawa).

Physical Description

Dimensions & Weight: 83 grams; approximately L 28mm x W 75mm x H 35mm at its widest points.
Form Factor: Natural wedge/triangular offcut with one flat, sawn working face and raw, bark-covered natural perimeter and reverse side.
Coloration: Warm cream-to-tan base matrix accented with faint rose/pink renge clouds and a deep oxidized brown/black natural skin.

Performance Evaluation

Slurry Generation: Releases fast-cutting, friable abrasive particles that break down readily under light water and blade pressure.
Finish & Edge: Excellent for generating a rich, contrast-heavy kasumi (mist) finish on clad blades, highlighting iron cladding versus high-carbon core steel without severe micro-scratching.
Ergonomics: Compact, finger-friendly shape suitable for raising a working slurry on bench stones or for direct small-area detail work, and tool touch-ups. Lacquer sealed, and lapped.