This will be a step by step tutorial for a basic repair on a broken display or show mounted sword.

Step One:
If the Tsuka or handle has been completely broken off the tang you can skip to the repair step. Removing the Mekugi Pin or bamboo pin out of the handle using a small phillips screwdriver. Place the screwdriver on one side of the pin and push it through the other side of the handle. Set the pin aside for later as you will be replacing the pin once repaired.

Step Two:
Grip the handle firmly then use your thumbs to push against the guard sliding the handle off of the tang.

Step Three:
Once the handle has been removed untie the Ito or cording and lay it aside. You do not want to cut it because it will need to be retied around the handle once repaired.

Step Four:
Depending on whether the handle is wood or plastic you can use a high quality two part epoxy or wood glue for the repair. Following the instructions for the glue or epoxy; spread it along the area that has been broken being careful to only place it around the outer edge. It will be impossible to slide the handle back onto the tang if the glue or epoxy overfills into the grooved bed for the tang. Use a hand clamp to hold the pieces together as it dries. Once dry, use a hobby knife or sand paper and carefully remove any excess glue or epoxy.

Step Five:
To retie the cording, lay it out flat in a straight line. Then divide it in half taking the center of the cord and place it flat against the base near the guard keeping the cording flat. Bring the cord to the front one cord at a time twisting it twice, and then bring over to the back. Repeat with the other cord until you have an X pattern keeping the cord flat against the handle. Repeat this step on the back as well. Repeat this until you reach the end of the handle. You will then wrap the cording one full turn, then bring it back and twist once more. Then using a flat tip screw driver lift up the previous knot and slip the cord through, repeating this process until all cording is under each knot. You can also tie a knot at the end of the handle and leave the excess cording to hang. This will be up to you on your preference.

Step Six:
Slide the handle onto the tang and turn the sword upright with one hand on the handle. Give the bottom a sharp tap; this will seat the tang firmly within the handle. Then replace the Mekugi Pin making sure it is flush with the handle.

In conclusion, this basic repair can be done by most armature hobbyists.