Parts of the Bokuto
Here is a list of parts on the bokuto, they are the same as the names for the parts of a live blade.
Kissaki: the tip.
Mune: the back of the blade.
Monouchi: the cutting portion of the edge, the 1/3 closest to the kissaki.
Chu-o: the middle third of the blade.
Tsuba moto: the third of the blade closest the handle.
Tsuba: the guard, not present on most Aikido bokuto.
Tsuka: the handle.
Shinogi: the ridge between the mune and the edge.
Shinogi-ji: the flat plane between the mune and the shinogi
Jigane: the flat plane between the shinogi and the temper line (edge).
Ha: the edge
Tsuka gashira: strictly the pommel fitting, butt end of the bokuto.
Types of Bokken
Bokken can be made to represent any style of weapon required such as nagamaki, no-dachi,yari, naginata, kama, etc. There are many different styles these include:
daitō or tachi (katana-sized), long sword shoto or kodachi or wakizashi bo, short sword, (wakizashi-sized)tantō bo (tantō-sized)suburito can be made in daitō and shoto sizes
Additionally, various koryu (traditional Japanese martial arts) have their own distinct styles of bokken which can vary slightly in length, tip shape, or in whether or not a tsuba (hilt guard) is added.
Suburito are bokken designed for use insuburi. Suburi, literally "bare swinging," are solo cutting exercises.
Suburito are thicker and heavier than normal bokken and users of suburito must therefore develop both strength and technique. Their weight makes them unsuitable for paired practice and kata. One famous user of the suburi-sized bokken is Miyamoto Musashi who used one in his duel against Sasaki Kojiro.