Our first test print was one of the fans for the inside of the computer. We printed it in two separate parts so it could be made that the fan blades spin. We printed a square with a bar and a fan blade with a small hole inside so the fan blade would be able to sit on top of it. The test print came out good as it functioned properly but we could have made the hole in the fan blade completely open instead of partially opened, so it could have sat on the square better and been more stable. As you can see from our picture, the fan blade sits on a square with a bar holding it in place so that it can spin.