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Off The Shelf
The standard viewer sports:
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The plastic mounts are 3mm thick with 52mm square apertures placed 65mm apart. They are composed of two identical plastic halves that are designed to press together with the film in between them. I consider these mounts to me nothing more than expensive raw materials. My preferred mount comes from Rocky Mountain Memories and is 80x132mm with several available film apertures. These cardboard mounts vary somewhat in thickness, but range from 1.25mm to 2mm.
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| Showing the curved diffuser panel and the very evident thumb groove. | When you pry the diffuser panel off, you can see the shiny interior. | Here you can see the lands and valleys that are supposed to hold the halves together. |
The diffuser on the viewer is an interesting piece. It is pressed on to the back of the viewer and usually held in place with a few drops of solvent. The diffuser carries the viewer's curves and grabs the light reasonably well. As I considered how to provide this viewer with an internal light, this cavernous enclosure (80x170mm) is what caught my attention.
Several people use thin fluorescent panels to light their viewers. To do so, they commonly remove the diffuser and tape the light source in its place. The result is a wall or battery powered illuminated viewer with a lot of bits sticking out. I wanted to see if I could get that thin light source mounted completely inside the removable diffuser panel.
The idea of modifying this steal-the-light viewer into a fully illuminated
viewer without changing its external appearance seemed a fun challenge.
But could it be done? Next 
[ Top of Viewer Project ]