Lucy the hybrid 120 roll film adapter

I´ve been having way too much fun with the 600SE converted 110A. With two CB-103 pack film backs I am equipped for any Polaroid occasion. One loaded with FP100C, the other with FP100B or 3000B. I like it so much I thought I would convert a 120 rollfilm back to mount on the camera too. Who would have thought it, the 110A a system camera?

The two main parts needed is of course a roll film back. I chose the Graflex 23 6x9 for its size, the Mamiya type backs may be better, but they would obscure the viewfinder. And you also need the mounting plate for a 600SE. On one of my CB-103 backs I measured the distance from the mount face as it meets the camera, and the film plane (I inserted a used film pack) and measured the corresponding distance with the Graflex taped to the mounting plate. 3,2mm needed shaving off somewhere. It can´t be done on the Graflex, there isn´t enough material to grind off. So I took a Dremel to the mounting plate and after a couple of hours had ground out enough for the Graflex to fit.

I then made a skirt and glued it to the Graflex in order to mate it to the mount. Painted black and applied light sealant before screwing the two halves together.

The parts, some tools and a cup of Livanto Lungo. Skirt seen to lower right.
It fits around the edge of the Graflex, glued 3.2mm from the face it
forms a lip enabling mounting to the adapter plate

The 600SE mounting plate, or adapter. 3.2mm has been ground out
from the right edge and just beyond the left edge of the light opening. Width
as for the Graflex back, not much more than the breadth of the opening top to bottom.

Lip glued to the Graflex, allowing the back to fit into the depression
in the mounting plate. Then screwed to the mount. Flocked all round.

As seen from the mount face

Mounted on the 110A

Edit: It works! From the first roll through the back. Another first (will make a separate post regarding the film used), Portra BW400CN in Caffenol-C-H (RS)

Polaroid 110A/600SE, Portra BW400CN, Caffenol-C-H