Step 1: Pieces You'll Need
3 dark grey
2 red gears
2 or 3 blue spacers
7 grey spacers
Step 2: 2. Putting It Together
Step 3: 3. Connecting the Gears and Motor Onto the Structure.
here is a link to the video about the chain lift.
you also need to add chain and put some gears on the top which is the same except no motor is needed!
enjoy good luck on your ball machine :-D
Step 4: The Video That Had This Type of Lift Bottom
Here is a little bit about our ball machine. It took 3 months to build,and it survived a 4.5 earthquake. I also think that it had 10,000 pieces.