When you are done building this, you should have a K'NEX drink machine that can hold to water bottles or soda cans at a time. It is assumed that you have a basic understanding of how to snap plastic K'NEX pieces together, and I didn't over this. You can make modifications to your machine to make it more sturdy, efficient, appealing, or convenient. Sometimes a bottle or can has trouble going down and leaving the machine, but for the most part it runs smoothly. Here is a video of the finished product.
Step 1: Part Count
Note that my part count is an approximation that is a little off. You should probably have more parts just in case my numbers are a little too low.
Step 2: Put Together the Base
Step 3: Put Together Middle Part
Step 4: Put Together Top Part
Step 5: Join Base and Middle Part
Step 6: Join Middle Part With Top Part
Step 7: Load It Up
Step 8: Use It!!!!
First eject bottle #1 (lower position) and then eject bottle #2 (higher position). Look at photos (left to right) to understand how to properly release bottles/cans.
This is my first instructable. Feel free to leave a comment. Questions, advise, criticism, complements, etc.