Sorry guys, I keep bombarding you with questions. In addition to collaborating on an ULF camera build I'm working on a PhD and doing some for-fun portrait photography on weekends... so I keep putting this aside and coming back to it.
My friends and I have thought about it and we've decided that we really can't afford to buy a new holder outright to use as a template (in addition to our numerous other costs), so we're going to try to build de novo.
Now, I'm hoping one of you would be willing to help me out with a very simple set of measurements of the outside and inside dimensions of your 12x20 holder.
We need the total thickness, the actual outside width of the 12" dimension as well as the inside width (ie, the opening width), plus the length (not including dark slide) and inside length along the 20" dimension. We will use the riblock and T-distance from filmholders.com and then just build everything based on the architecture of a wooden 8x10 holder.
If anyone could help it would be tremendously appreciated.
Otherwise we may just design around some weird arbitrary size and have cameras that only work with our own weird film holders