My first constraint for this project is making sure the materials I use do not create something extremely heavy and annoying to carry around. Since this prop does not need to be used functionally as a sword and only as something for show I want the material to be light.
The next constraint would be in making sure that the swords are durable. So using something like cardboard though it would be extremely light may break very easily or bend, ruining the look of the prop. Something like a thin wood stacked onto each other may prove more durable for this project.
The third constraint would be the sizing of the swords as this will limit the types of wood/ necessity of wood work needed to find the ideal size. Something around arms length (2 to 3 feet) might suffice and will also help in making sure it stays light.
The fourth constraint is assembling the swords in such a manner that an Arduino can be put in place to control LEDs that are activated by some switch around the handle. This will require some parts of the wood to have hallow pieces which may become weak spots for the prop.
The final constraint is making sure that the design of this sword holds true to it’s fantasy/cosplay aesthetic. It shouldn’t look extremely realistic or like a toy but it should be recognizable to it’s origins and compliment a full cosplay.