Quote Originally Posted by michaelbsc View Post
Can you post some pictures. I have in mind that an old Graflex film pack holder may be think enough. And since no one makes film packs any more they're basically useless.

Ripping the septums out of a Graphmatic seems kind of a waste if the pack film holder will work.

Just a though. But seeing your pics could help make it make sense.
It is a film pack adapter ( not a graphmatic ) they modified. I am not very familiar with them, so I'm not sure how much they changed it, other than gluing felt to the back. Shoot me a PM and I'll send you the whole paper on making Lippmann Plates. It has a photo of the authors modified film pack adapter along with a whole description & history of the process.