Introduction: Incredibly Simple Knex Piston
In this instructable I will show you how to make a very small and simple piston out of knex. This is lever activated but can be modified to be circular motion activated.
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Step 1: The Frame
make what is shown in the pictures. This will be the frame.
Step 2: Make the Piston Part
This will be the piston and lever.
Step 3: Completion
Follow the pictures.
watch in picture 4 for the blue clips.
move the black peice back and forth and the rods will go in and out.