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layer: "La Petite Blanche"
extracted: Coticule Quarry at Ol Preu.
size: irregularly sized bout: 4cm wide at one end, 4,8cm wide at the other end, ca 14cm long.
natural combination hone: thickness of Coticule: 6mm / thickness of BBW: 12-14mm.
speed with slurry: very fast (range: very slow - slow - moderate - moderately fast - fast - very fast)
speed with water: moderate (range: very slow - slow- moderate)
slurry: a clear sensation of fine abrasion, typical sound of "sharpening steel" Slurry turns black quickly.
water:a faint sensation of very fine abrasion.
Slurry specifics: good slurry release.
Sharpness level coming off slurry: ++ (range: + shaves my arm hair barely, ++ shaves my arm hair well, +++ sufficient to shave my face)
Finishing properties, water only: engaging (range: brisk - engaging - mellow)
Dilucot: follow standard procedure.
Unicot: follow standard procedure.
Touch-up hone, use with water: Very capable touch-up hone, due to refining speed on water.
Additional remark: BBW slice shows 2 layers of slightly different shade. Sandwiched part possibly has properties similar to Coticule n°49.