I'm Isaac and my friend and I are 11 years old. We made the sears tower through three trials. The first one failed the second one also of course failed and the last one came out perfect. The only problem with it was that the spires did not print but we fixed that. We are excited to see what the outcome of this contest will be. We're crossing our fingers!!!We started with a base and than worked our way up. We used the offset tool in SketchUp to make the bundled tubes on the tower. We finished it off with the spires by creating smaller cylinders on the top of the structure. It seems like it was easy, but it actually took us a week to make the finishing touches on it and make it perfect.