7x17 film holder

I am looking for a broken and unusable 7x17 film holder. I have e-mailed quite a few places and called other and no one keeps anything like that around. Would one of you folks have one available.

I want to make a 7x17 camera and need a template. ANy help would be great and if you know of a place that might have something like this I would appreciate it.

Thanks in advance