For my 8mm telecine, I am planning on enlarging the gate in order to ensure that I capture the full exposed image. I plan on modifying the width either by filing or milling with a small milling machine. I could just start hacking away until I’m satisfied, but I don’t think that is the best approach. Furthermore, I suspect that different films will have different widths, so I might undershoot depending on which film I use as my guide.
So I was wondering, are there exact dimensions available that I should follow? Obviously, the sprocket area needs to be widened the most. I am not sure if the opposite (non-sprocket) side should be widened or not. Either way, what would the dimensions of the “extensions” be? Has anyone done some analysis or found a reference to do so, or is it really just trial and error?