Can't see the pics either. But I did the same thing about 10 years ago, except I had access to my brothers precision machining business. It was still a little crude, but it did work. I needed to smooth out one edge because it was grinding the top edge of the film. I ended up auctioning it off on eBay to some guy in Taiwan. He also worked in a precision machining company and he refined it a little more. The only thing I did miss was having a true rangefinder...guessing the focus position was hit and miss.