In this project I would like to highlight the making of koiguchi of the copper band type.  This style of koiguchi provides substantial strength to saya anad allows considerable flexability in the manufacture of koshirae around selected kodogu.


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This photo shows the koiguchi of the saya prior to the fitting of koiguchi.  The opening is still in its rough form and has yet to be fitted with the tsuka and respective seppa.







A piece of copper is selected









One edge is filed flat









Shears are used to cut a band of copper from the stock







The band is flattened






Paper is used as "oshigata" for determining the lenght of the band







The lenghth is transferred to the band







The band is cut to lenght








Preliminary form is set







The edged is prepped and soldered











The seam is cleaned inside and out










The edge is then filed Flat in preperation for application to the saya







The saya is marked for stock removal







The depth is cut using kebiki







I like dozuki for inititial cuts but care must be excercised!








Nomi is now used for stock removal







The saya is ready for fitting







The band is gently adjusted with genno and contact with saya is adjusted by continous removal of stock






The ana is plugged and yasuri used to bring the band to an acceptable height and flatness.














Yasuri is now used for bringing the band to an acceptable level for nuri









Even better!








Notice that this style of koiguchi allows a considerable amount of stock to remain on the saya while still being quite thick, making it the koiguchi of choice for practioners of martial arts