I think it's all in the headline. My Reisekamera https://www.flickr.com/photos/cheffa...57627148282242 has a detachable wooden cassette holder so I was thinking I would like to fit a borrowed 8x10 springback to use my stock of 18x24 film in also borrowed 18x24 film holders. I really want to use that 100 year old Tessar Fliegertruppe that came with it!

Is there a standard solution to this that anyone can direct me to or do I just try to make a wooden frame and carve until everything fits?

Happy for any input on this!