I've came up this week with a knex handball. It's solid,and hurts alot,but it's not unbreakeble.NO RODS,only white,grey(2)and orange connectors.
This "technology" isn't new,i know it.
Connectors list: 40 - grey2
18 - white8
8 - orange2
DON'T LEAVE IT LIKE THIS OVERNIGHT,THE ORANGE AND GREY PARTS WILL DAMAGE WITH TIME,mine are a bit weaker,only the white connectors have a cool thing,some holes are stiffer.
Step 1: Parts list(image)