Lamp holder for Cage modular DSLR

This is a Lamp holder for Cage modular DSLR. This is for my sony A37 DSLR. To attach the handle I use M4 vis screw.

I create a ball reinforced by a screw M4 for this think.

Link of my Cage modular DSLR : http://www.thingiverse.com/thing:1852219