For my fidget spinner I originally thought that I would only need two wings, but it turns out that I needed four for a more balanced spin. The challenge of building the fidget spinner was trying not to burn my hand. The bearing for the fidget spinner was also very greasy therefore the glue had trouble latching onto the bearing, this was problematic yet I leapt over the hurdle. I did try to make two wings work but to no avail, this is why I added two more wings. I think the two wings didn’t work because it wasn’t balanced properly.