Cool. The onshape link asks me to login right away. Without logging in, I don't see your 3D item. You're invited to also upload the robot arm to www.3dprintmakers.com.
Onshape is free and cloud based. It's good because you can easily create an account and edit the file yourself, but a bummer because it's not free software and you can't export raw files, only dumb solids.
Despite the drawbacks, I'm keeping it in OnShape though, where anyone can fork and edit the file for free.
