This is how to make a katana blade or lightsaber katana blade!

Step 1: Step 1

Get a cube and stretch it out to a rectangular shape.

Colour it what colour you want!

Step 2: Step 2

Get another cube but don't change it yet.

Lift it up and put it over the blue rectangle.

Make the cube a 45 degree angle over the blue rectangle.

Click on the cube and make it hole.

Stretch the cube to your liking.

Fuse the cube and the blue rectangle together.

Get a cube and stretch it to a rectangular shape but don't make it right to the tip.

Twist it to a 25 degree angle and push it into the blue rectangle.

Copy it and do it on the other side.

Make them both hole and fuse them together.

Get a cube and and duplicate it.

Move to the top and curve them a 20 degree angle.

Make it hole and and fuse it.

Now your done!

You have your own katana blade!