1/4"-20 UNC (Photoscrew) replaced with M8 Screw

1/4"-20 UNC Screws are not that easy avaible outside the US - here they are not cheap.  A thread cutting die for the ¼"-20UNC thread was much cheaper (4€80) then the screw (11€).

I changed the top part so it acepts a M8 screw head, the M8 threads are removed on a lathe, then the UNC threads were cutted