I am preparing to upgrade my CR-10S with an E3D V6 hot end. While researching what I will need to successfully upgrade I downloaded a file to print a mount from Matterhackers website. Instead of an STL file it downloaded as an AMF file. I have no idea what to do with an AMF file. I am using Cura as my slicing software and the file will not open in this application. Is there e a way to open this in Cura? I didn't see any option on file format when I downloaded from Matterhackers. Any info would be appreciated.