Hello RoBoers... One of the projects I am working on is a custom quadcopter that I will be printing on my new RoBo 3D. I am modeling it after the TBD Discovery model. Seen here.... I was hoping one of you guys could do me a solid... I found a STL of an arm I want to use and was hoping someone could convert it to a STEP for me.. This way I can make small mods to it and fit it to the custom body I'm designing.... Any help on this project would be great as this is my first quadcopter build.... "I'm getting an error trying to upload the STL"