Today I wanted to make a more impressive see-saw for my machine. The problem with my last attempt was that the card was too floppy, so I found some stronger pieces and glued them to two jars to create my see-saw. I attached a piece of fabric to the one end. The idea would be that the fabric unfurled releasing the rolling jar inside. It worked well and also stopped the jar from rolling in the wrong direction. I stacked up some larger bottle-tops which would fall through a pipe when they were toppled. This worked, although later I was able to find a way of balancing them so they would all fall through, and this made it easier to manage the weights needed to trigger the next part of the machine.

I then started to set up a few devices in sequence to create a small Rube Goldberg machine. When the bottle-tops fell came through the pipe they would fall into a pot, and using the system that I created on Wednesday, the extra weight would pull another pot up, which in turn would knock another see-saw. In theory it worked but the weight needed to pull the pot was quite hit and miss, and it wasn't heavy enough to push the final see-saw upwards. I could counteract this problem by either using heavier objects instead of bottletops, or using lighter materials for the see-saw.