Since my last blog post, a lot has been added to our machine. We have built the scale, pulley, and back board. Here is a picture of us building our backboard.

We painted our backboard green and have attached all of the ramps, the pulley, and the scale. When we roll our marble down from the top, it works flawlessly, but we still have a few problems. Everything in our machine is great except we are still trying to figure out how to get the pulley to successfully carry up our marble. We are also trying to figure out how to get the marble from the scale to the pulley, but we have some ideas. Our machine is otherwise going great and I’m almost 100% sure we can get this done on time!