A Knex balisong made for smoothness and tricks so you don't have to buy a practice knife for the real thing. If anyone has an idea for a better blade please post a comment.
Step 1: Blade
Simple. Just use tape around the two green rods to keep it from twisting.
Step 2: Handles
MAKE 2 OF THESE. Put tape around the green rods and don't forget the one taped into the holes.
Step 3: Assembly
Easy Peasy. Enjoy!