here is the one we did : http://www.calimacil.com/weapons/spears/telescopic-spear.html. We also work on new design.
We are working on it. we search for the best composition : foam and core. We do not forget this idea, we will find something to work it out! But that’s a big challenge.
this is a very complex weapon to produce. We will see what is possible to doAnonymous commented
A consideration in regards to staffs should be a butt cap of some sort. I was gifted the Raijin and used it as a walking staff the foam on the bottom of the staff was quickly damaged with every step i took it was pressed into the ground.