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Picture of knex butterfly knife
Things you NEED!



to make it bigger, whenever i say yellow rod, use a red rod. and smaller, use blue rod.
 
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Step 1: Pt.2

Picture of pt.2
put in grey connectors, pegs, and rods as shown

Step 2: Handles

Picture of handles
make 2 of these

Step 3: Attachment 1

Picture of Attachment 1
loosely add "new" connecters

Step 4: Attachment 2

Picture of attachment 2
add handles asshown

Step 5: Blade

Picture of blade
add yellow rod here.

Step 6: DONE

yay

i  made a video on how to use this