Wow! Just got done looking at the homebuilt camera thread. Impressive.
Here's a little lensboard I made to add swing and tilt to my 5x7 Gundlach Korona View, without altering the camera itself. The short bellows is actually made out of gaffers tape, since it's so short.
The back portion fits into the front standard as a "normal" lensboard.
Before finishing it. I later reversed the bolts and finished it to match the camera's color.
The finished lensboard.
Now the old girl can twist and turn with the best!
I have used this lensboard for a couple of months and am very satisfied with the movements. I have had no difficulties with it except for sore fingers when tightening against the force of the springs.