[anikin]

Too much slippage with the Lee Valley clips. One would need to hack it to make it more secure. A couple of small holes in the clip and a similarly small screw to pinch the film ala Patterson or Jobo clips would work but that's probably too much work for clips.

Yes, that's what I love about the clips I have is that they make a small pinhole right on the edge of the film and hold it with a death grip. The opening is just big enough to get to the edge of viewing area, but not any closer. Jobo clips design looks fairly similar but I just like these much more. I made an inquiry on alibaba, but no response so far. I think that next time I see my dentist I will ask him where he gets his clips.