Technical info

dsc_0207

Side view of a 38 tsuba (left) and a 39 Tsuba (right)

TSUBA for 39 Shinai

  • Tsuba outer diameter: 84 mm
  • Thickness: 8 mm
  • Material: premium polycarbonate (PC)
  • Hole diameter: 34 mm
  • Weight: ~40 g

TSUBA for 38 Shinai 

  • Tsuba outer diameter: 84 mm
  • Thickness: 6 mm
  • Material: premium polycarbonate (PC)
  • Hole diameter: 32 mm
  • Weight: ~30 g 

dsc_7407Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate groups in their chemical structures. Polycarbonates used in engineering are strong, tough materials, and some grades are optically transparent. They are easily worked, molded, and thermoformed. Because of these properties, polycarbonates find many applications.

Polycarbonates received their name because they are polymers containing carbonate groups (−O−(C=O)−O−). A balance of useful features, including temperature resistance, impact resistance and optical properties, positions polycarbonates between commodity plastics and engineering plastics.  Source: https://en.wikipedia.org/wiki/Polycarbonate

  • Sticker: two or one sided, laminated vinyl sticker on the tsuba from the direction of the tsukagawa
  • Decoration: practically anything can be on the tsuba
  • Tsubadome: every the tsuba come with a transparent tsubadome

All tsuba are cut and polished, also the stickers are mounted on the tsuba by hand.

Did yokoteu know that a plastic tsuba can be a better choice for a tournament than a leather one?

Simply because a strike landed on a leather tsuba might sound very much like one which has landed on the kote itself, so if it is a fast strike the shinpan may award your opponent an ippon for a not properly placed strike. However, the sound of a strike to a plastic tsuba can not easily be mistaken.

Placing the tsuba on the shinai

The laminated vinyl sticker is mounted on the backside of the tsuba. The tsuba should always put on the shinai so that the side with the sticker looks to the tsukagawa (leather handle) in order to have maximum protection for the pattern.

 

Maintenance

It is natural that the surface of the tsuba will get scratchy as it gets hit many times by the training partner’s shinai (bamboo sword). However it is possible to restore the original shine of the surface by polishing it. We are going to share more info on this topic in the future.

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