Universal phone/webcam holder to stream the printing progress.

Hello all,
this is an universal Camera/phone holder which can be mounted on your Aluminium rail.

Update (Dec 25, 2015): re-created as Version 2, optimized some things.

The point is I turned my old Android phone into an online webcam/video streaming device to monitor the printing progress.

I won't describe all the details here, but these are the basics:
1. Stuff consists of 4 main pieces:
a) M6 T Slot Nut (for 30x30mm ALU profile). If you have a 20x20mm ALU profile, download