Sunnobi tanto are larger than ordinary tanto (nagasa above 1 shaku) and may have sori similar to ko-wakizashi. Read more about the process of yaki-ire.
1. Using approximately a 1:1:1 mixture of natural clay, polishing stone powder and ground charcoal to mask the back of a hand forged blade about 1-1.5mm thick to slow down the cooling rate.
2. Brushing on a thin slip layer with extra charcoal added along the exposed edge to speed up the cooling rate and protect from carbon loss.
3. Carefully heating in a charcoal forge supplied by air from a fuigo box bellows until the edge reaches critical temperature.
4. Plunging edge-first into cold rainwater to cool the blade quickly and harden the edge while leaving the rest tough and resilient.
5. Testing for successful hardening with a file and then removing the clay with a mild steel scraper.
6. Slightly reheating the blade over the flames to temper the edge.
7. Test polishing on a coarse Japanese waterstone to check the hamon.
Making a habaki from reclaimed copper. Material is scrap copper from an electrical bus bar, forged and bent to shape, silver brazed with hard silver solder in the charcoal forge with fuigo, finish work done with files and rasps. Watch the shorter overview edit here.
A custom mameganna (small “bean” plane) such as might be used by furniture makers can be made fairly quickly from an old chisel. This type of kanna might be used for shaping saya or tsuka or for other small woodwork projects requiring a custom radius or access to… Continue reading
A true and accurate understanding of the past is an important step towards a good future. 温胡知新 (on ko chi shin) is an expression that most directly translates to, “study the old to know the new”. This one-of-a-kind project represents the current progression of my work based on… Continue reading
Making a habaki from reclaimed copper. Material is scrap copper from an electrical bus bar, forged and bent to shape, silver brazed with hard silver solder in the charcoal forge with fuigo, finish work done with files and rasps. Watch the full length process edit here.
Futokorogatana (懐刀) is translated as “clothing fold sword” and describes a type of tanto mounting meant to be carried in the kimono sleeve or fold. Also known as kaiken, this humble style of hidden mounting is usually unadorned with a smooth profile and lacquer finish. This knife would… Continue reading
This custom kotanto finds a balance between the humble satoyama style and a classical tanto with a striking combination of forged copper, natural orange hardwood, and black urushi lacquer. The blade began as a reclaimed harrow tooth and was hand forged in a charcoal fire, differentially hardened using… Continue reading
Forging a custom forest kotanto in the swordsmith forge. The starting material was a harrow tooth, the finished blade is hirazukuri, mitsu mune, 140mm / 5.5″ nagasa, with a sturdy 6.5mm motokasane. The finish will be tsuchime (hammer texture) so there was no filing or polishing before yaki-ire, which was done at my forge for the dim and consistent light conditions.
Traditional Japanese swordsmithing hammers have rectangular eyes with no taper. The handles are not wedged but are held in place by a compression fit involving careful shaping, hand forged wood, and soaking in water. The wood is shaped a couple of mm oversized, compressed by hammering, and then… Continue reading