About this 3D model
Here is my desk clamp for holding my mobile when recording. I'm very happy with the strength and stability. It's not a new idea, this has been done by many for years. But this is my version. I've created a dovetail joint at the end for additional attachments when i design them. It's on a 22/8/7 skater bearing with a M3 bolt holding it. Rotates very well.